--- loncom/xml/londefdef.pm	2005/11/03 21:42:15	1.291
+++ loncom/xml/londefdef.pm	2006/03/29 22:54:10	1.302.2.4
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Tags Default Definition Module 
 #
-# $Id: londefdef.pm,v 1.291 2005/11/03 21:42:15 albertel Exp $
+# $Id: londefdef.pm,v 1.302.2.4 2006/03/29 22:54:10 albertel Exp $
 # 
 #
 # Copyright Michigan State University Board of Trustees
@@ -48,6 +48,7 @@ use Apache::lonmenu();
 use Apache::lonmeta();
 use Apache::Constants qw(:common);
 use File::Basename;
+# use Data::Dumper;
 
 BEGIN {
 
@@ -55,7 +56,21 @@ BEGIN {
 
 }
 
-
+#
+#   Dumps all elements of the table structure.
+#   Need this 'cause evidently when given an array, Data::Dumper only seems
+#   to dump element 0.
+#
+#sub debug_dump_table {
+#    my $lastrow = $#Apache::londefdef::table;
+#    &Apache::lonnet::logthis("Dumping table:  Last row index: $lastrow");
+#    my $row;
+#    for ($row =0; $row <= $lastrow; $row++ ) {
+#	my $text = Dumper($Apache::londefdef::table[$row]);
+#	&Apache::lonnet::logthis("table [ $row ]".$text);
+#
+#    }
+#}
 sub initialize_londefdef {
     $Apache::londefdef::TD_redirection=0;
     @Apache::londefdef::table = ();
@@ -110,8 +125,8 @@ sub start_m {
 	# detect simple math mode entry exits, and convert them
         # to use \ensuremath
 	if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
-	    $currentstring=~s/^\$//;
-	    $currentstring=~s/\$$//;
+	    $currentstring=~s/^(\s*)\$/$1/;
+	    $currentstring=~s/\$(\s*)$/$1/;
 	    $currentstring='\ensuremath{'.$currentstring.'}';
 	}
 	$Apache::lonxml::post_evaluate=0;
@@ -129,10 +144,11 @@ sub end_m {
 }
 
 sub start_tthoption {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
     my $result;
-    if ($target eq 'web') {
-	my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
+    if ($target eq 'web' || $target eq 'webgrade') {
+	my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
+						   $style);
 	$inside=~s/^\s*//;
 	if ($env{'browser.mathml'}) {
 	    &tth::ttmoptions($inside);
@@ -215,7 +231,7 @@ sub end_head {
 sub start_map {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -224,7 +240,7 @@ sub start_map {
 sub end_map {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -234,7 +250,7 @@ sub end_map {
 sub start_select {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     }  elsif ($target eq 'tex') {
 	$Apache::londefdef::select=0;
@@ -245,7 +261,7 @@ sub start_select {
 sub end_select {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -255,7 +271,7 @@ sub end_select {
 sub start_option {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	$Apache::londefdef::select++;
@@ -271,7 +287,7 @@ sub start_option {
 sub end_option {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     }  elsif ($target eq 'tex') {
 	$currentstring='}';
@@ -283,7 +299,7 @@ sub end_option {
 sub start_input {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -292,7 +308,7 @@ sub start_input {
 sub end_input {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -302,7 +318,7 @@ sub end_input {
 sub start_textarea {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -311,7 +327,7 @@ sub start_textarea {
 sub end_textarea {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -321,7 +337,7 @@ sub end_textarea {
 sub start_form {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -330,7 +346,7 @@ sub start_form {
 sub end_form {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -369,13 +385,13 @@ sub end_title {
 
 #-- <meta> tag (end tag forbidden)
 sub start_meta {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	my $args='';
 	if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
 	if ($args eq '') {
-	    &Apache::lonxml::get_all_text("/meta",$parser);
+	    &Apache::lonxml::get_all_text("/meta",$parser,$style);
 	} else {
 	    $currentstring = $token->[4];
 	}
@@ -420,7 +436,7 @@ sub start_meta {
 sub end_meta {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	my $args='';
 	if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
 	if ($args ne '') {
@@ -438,7 +454,7 @@ sub end_meta {
 
 # accessrule
 sub start_accessrule {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
     my $currentstring = '';
     my $eff=&Apache::lonxml::get_param
 	('effect',$parstack,$safeeval,undef,1);
@@ -457,7 +473,7 @@ sub start_accessrule {
 	my $args='';
 	if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
 	if ($args eq '') {
-	    &Apache::lonxml::get_all_text("/accessrule",$parser);
+	    &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
 	} else {
 	    $currentstring = $token->[4];
 	}
@@ -578,25 +594,34 @@ sub end_body {
     return $currentstring;
 }
 
+# \begin{center} causes a new paragprah spacing that looks odd inside 
+# of a table cell
+sub center_correction { return '\vspace*{-6 mm}'; }
 #-- <center> tag (end tag required)
 sub start_center {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack) = @_;
     my $currentstring = &end_p();	# Close off any prior para.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {
+	if (&is_inside_of($tagstack, "table")) {
+	    $currentstring .= &center_correction();
+	}
 	$currentstring .= '\begin{center}';  
     }
     return $currentstring;
 }
 
 sub end_center {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	$currentstring = '\end{center}';  
+	if (&is_inside_of($tagstack, "table")) {
+	    #$currentstring .= &center_correction();
+	}
     }
     return $currentstring;
 }
@@ -606,7 +631,7 @@ sub end_center {
 sub start_b {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	&disable_para();
@@ -618,7 +643,7 @@ sub start_b {
 sub end_b {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	&enable_para();
@@ -632,7 +657,7 @@ sub end_b {
 sub start_strong {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	&disable_para();
@@ -644,7 +669,7 @@ sub start_strong {
 sub end_strong {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {	
+    if ($target eq 'web' || $target eq 'webgrade') {	
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	&enable_para();
@@ -657,7 +682,7 @@ sub end_strong {
 sub start_h1 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = &end_p();	# Close off any prior para.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	my $pre;
@@ -682,7 +707,7 @@ sub start_h1 {
 sub end_h1 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	my $post='\vskip 0 mm ';
@@ -706,7 +731,7 @@ sub end_h1 {
 sub start_h2 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = &end_p();	# Close off any prior para.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	my $pre;
@@ -728,7 +753,7 @@ sub start_h2 {
 sub end_h2 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	my $post='\vskip 0 mm ';
@@ -749,7 +774,7 @@ sub end_h2 {
 sub start_h3 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = &end_p();	# Close off any prior para.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	my $pre;
@@ -771,7 +796,7 @@ sub start_h3 {
 sub end_h3 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	my $post='\vskip 0 mm ';
@@ -792,7 +817,7 @@ sub end_h3 {
 sub start_h4 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = &end_p();	# Close off any prior para.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	my $pre;
@@ -814,7 +839,7 @@ sub start_h4 {
 sub end_h4 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	my $post='\vskip 0 mm ';
@@ -835,7 +860,7 @@ sub end_h4 {
 sub start_h5 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = &end_p();	# Close off any prior paras.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	my $pre;
@@ -857,7 +882,7 @@ sub start_h5 {
 sub end_h5 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	my $post='\vskip 0 mm ';
@@ -878,7 +903,7 @@ sub end_h5 {
 sub start_h6 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = &end_p();	# Close off any prior paras.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	my $pre;
@@ -900,7 +925,7 @@ sub start_h6 {
 sub end_h6 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	my $post='\vskip 0 mm ';
@@ -921,7 +946,7 @@ sub end_h6 {
 sub start_cite {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\textit{';
@@ -932,7 +957,7 @@ sub start_cite {
 sub end_cite {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
@@ -944,7 +969,7 @@ sub end_cite {
 sub start_i {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\textit{';
@@ -955,7 +980,7 @@ sub start_i {
 sub end_i {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
@@ -967,7 +992,7 @@ sub end_i {
 sub start_address {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\textit{';
@@ -978,7 +1003,7 @@ sub start_address {
 sub end_address {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
@@ -990,7 +1015,7 @@ sub end_address {
 sub start_dfn {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\textit{';
@@ -1001,7 +1026,7 @@ sub start_dfn {
 sub end_dfn {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
@@ -1013,7 +1038,7 @@ sub end_dfn {
 sub start_tt {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\texttt{';
@@ -1024,7 +1049,7 @@ sub start_tt {
 sub end_tt {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
@@ -1036,7 +1061,7 @@ sub end_tt {
 sub start_kbd {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\texttt{';
@@ -1047,7 +1072,7 @@ sub start_kbd {
 sub end_kbd {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
@@ -1059,7 +1084,7 @@ sub end_kbd {
 sub start_code {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\texttt{';
@@ -1070,7 +1095,7 @@ sub start_code {
 sub end_code {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
@@ -1082,7 +1107,7 @@ sub end_code {
 sub start_em {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\emph{';
@@ -1093,7 +1118,7 @@ sub start_em {
 sub end_em {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
@@ -1105,7 +1130,7 @@ sub end_em {
 sub start_q {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\emph{';
@@ -1116,7 +1141,7 @@ sub start_q {
 sub end_q {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
@@ -1155,7 +1180,7 @@ sub enable_para {
 sub start_p {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= &end_p();	# close off prior para if in progress.
 	$currentstring .= $token->[4];
 	if (! ($currentstring =~ /\//)) {
@@ -1167,6 +1192,10 @@ sub start_p {
 	if ($align eq 'center') {
 	    $currentstring .='\begin{center}\par';
 	    $closing_string = '\end{center}';
+	    if (&is_inside_of($tagstack, "table")) {
+		$currentstring = &center_correction().$currentstring;
+		#$closing_string .= &center_correction();
+	    }
 	} elsif ($align eq 'right') {
 	    $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
 	    $closing_string= '}}';
@@ -1202,7 +1231,7 @@ sub end_p {
 sub start_br {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	my @tempo=@$tagstack;
@@ -1230,7 +1259,7 @@ sub start_br {
 sub end_br {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     }
     return $currentstring;
@@ -1240,7 +1269,7 @@ sub end_br {
 sub start_big {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '{\large ';
@@ -1251,7 +1280,7 @@ sub start_big {
 sub end_big {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
@@ -1263,7 +1292,7 @@ sub end_big {
 sub start_small {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '{\footnotesize ';
@@ -1274,7 +1303,7 @@ sub start_small {
 sub end_small {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
@@ -1286,7 +1315,7 @@ sub end_small {
 sub start_basefont {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
@@ -1300,7 +1329,7 @@ sub start_basefont {
 sub end_basefont {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
@@ -1315,7 +1344,7 @@ sub end_basefont {
 sub start_font {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
 	if ($face!~/symbol/i) {
 	    if (($env{'browser.fontenhance'} eq 'on') || 
@@ -1334,7 +1363,7 @@ sub start_font {
 sub end_font {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     }  elsif ($target eq 'tex') {
 	my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
@@ -1349,7 +1378,7 @@ sub end_font {
 sub start_strike {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	&Apache::lonxml::startredirection();
@@ -1360,7 +1389,7 @@ sub start_strike {
 sub end_strike {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring=&Apache::lonxml::endredirection();
@@ -1375,7 +1404,7 @@ sub end_strike {
 sub start_s {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	&Apache::lonxml::startredirection();
@@ -1386,7 +1415,7 @@ sub start_s {
 sub end_s {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring=&Apache::lonxml::endredirection();
@@ -1401,7 +1430,7 @@ sub end_s {
 sub start_sub {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\ensuremath{_{';
@@ -1412,7 +1441,7 @@ sub start_sub {
 sub end_sub {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}}';
@@ -1424,7 +1453,7 @@ sub end_sub {
 sub start_sup {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\ensuremath{^{';
@@ -1435,7 +1464,7 @@ sub start_sup {
 sub end_sup {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}}';
@@ -1447,7 +1476,7 @@ sub end_sup {
 sub start_hr {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = &end_p();	# End enclosing para.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
@@ -1477,7 +1506,7 @@ sub start_hr {
 sub end_hr {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     }
     return $currentstring;
@@ -1495,7 +1524,7 @@ sub end_hr {
 sub start_div {
     my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
     my $currentstring = &end_p();	# Close enclosing para.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } 
     if ($target eq 'tex') {
@@ -1508,6 +1537,10 @@ sub start_div {
 	if ($align eq 'center') {
 	    $currentstring .= '\begin{center}';
 	    $endstring      = '\end{center}';
+	    if (&is_inside_of($tagstack, "table")) {
+		$currentstring = &center_correction().$currentstring;
+		#$endstring .= &center_correction();
+	    }
 	}
 	elsif ($align eq 'right') {
 	    $currentstring .= '\begin{flushright}';
@@ -1528,7 +1561,7 @@ sub start_div {
 sub end_div {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     }
     if ($target eq 'tex') {
@@ -1543,7 +1576,7 @@ sub end_div {
 sub start_a {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
 					    undef,1);
 	$currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
@@ -1565,7 +1598,7 @@ sub start_a {
 sub end_a {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     }
     return $currentstring;
@@ -1575,7 +1608,7 @@ sub end_a {
 sub start_li {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
@@ -1606,7 +1639,7 @@ sub start_li {
 sub end_li {
     my ($target,$token) = @_;
     my $currentstring = &end_p();	# In case there's a <p> in the <li>
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];     
     } 
     return $currentstring;
@@ -1616,7 +1649,7 @@ sub end_li {
 sub start_u {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	&Apache::lonxml::startredirection();
@@ -1627,7 +1660,7 @@ sub start_u {
 sub end_u {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring=&Apache::lonxml::endredirection();
@@ -1642,7 +1675,7 @@ sub end_u {
 sub start_ul {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = &end_p();	# Close off enclosing list.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {
 	my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
@@ -1671,7 +1704,7 @@ sub start_ul {
 sub end_ul {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	$currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
@@ -1686,7 +1719,7 @@ sub end_ul {
 sub start_menu {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	$currentstring = " \\begin{itemize} ";  
@@ -1697,7 +1730,7 @@ sub start_menu {
 sub end_menu {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	$currentstring = " \\end{itemize}";  
@@ -1709,7 +1742,7 @@ sub end_menu {
 sub start_dir {
     my ($target,$token) = @_;
     my $currentstring = &end_p();	# In case there's a <p> prior to the list.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {
 	$currentstring .= " \\begin{itemize} ";  
@@ -1720,7 +1753,7 @@ sub start_dir {
 sub end_dir {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	$currentstring = " \\end{itemize}";  
@@ -1732,7 +1765,7 @@ sub end_dir {
 sub start_ol {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = &end_p();	# In case there's a <p> prior to the list.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {
 	$Apache::londefdef::list_index=0;
@@ -1771,7 +1804,7 @@ sub start_ol {
 sub end_ol {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	$currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
@@ -1786,7 +1819,7 @@ sub end_ol {
 sub start_dl {
     my ($target,$token) = @_;
     my $currentstring = &end_p();	# In case there's a <p> unclosed prior to the list.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {
 	$currentstring .= '\begin{description}';
@@ -1802,7 +1835,7 @@ sub start_dl {
 sub end_dl {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
@@ -1824,7 +1857,7 @@ sub end_dl {
 sub start_dt {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring='';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
@@ -1839,7 +1872,7 @@ sub start_dt {
 sub end_dt {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } elsif ($target eq 'tex') {
 	if ($Apache::londefdef::DT[-1]) {
@@ -1862,7 +1895,7 @@ sub item_cleanup {
 sub start_dd {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
@@ -1881,7 +1914,7 @@ sub start_dd {
 sub end_dd {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     }  elsif ($target eq 'tex') {
 	$Apache::londefdef::description[-1]->[-1].=
@@ -1902,7 +1935,7 @@ sub start_table {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $textwidth = '';
     my $currentstring = &end_p();
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {
 	my $aa = {};
@@ -1925,24 +1958,30 @@ sub start_table {
 		}
 	    }
 	}
+
+	# width either comes forced from the TeXwidth or the width parameters.
+	# in either case it can be a percentage or absolute width.
+	# in the width case we ignore absolute width 
 	my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
-	if (not defined $TeXwidth) {
-	    my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
-	    if ($htmlwidth=~/%/) {
-                $Apache::londefdef::table[-1]{'percent'}=1;
-		$htmlwidth=~/(\d+)/;
-		$Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
-	    } else {
-		$Apache::londefdef::table[-1]{'width'}=$textwidth;
+	if (!defined($TeXwidth)) {
+	    my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
+						       $safeeval,undef,1);
+	    if ($htmlwidth =~ /%/) {
+		$TeXwidth = $htmlwidth;
+	    } else { 
+		$TeXwidth = $textwidth;
 	    }
-	} elsif ($TeXwidth=~/%/) {
+	} else {
+	    $Apache::londefdef::table[-1]{'forcedtablewidth'} = 1;
+	}
+	if ($TeXwidth=~/%/) {
 	    $Apache::londefdef::table[-1]{'percent'}=1;
 	    $TeXwidth=~/(\d+)/;
             $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
 	} else {
-	    $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
 	    $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
 	}        
+
         #table's border
 	my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval); 
         my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
@@ -1970,20 +2009,23 @@ sub start_table {
         $Apache::londefdef::table[-1]{'content'}=[];
         $Apache::londefdef::table[-1]{'align'}=[];
         $currentstring.='\keephidden{NEW TABLE ENTRY}';
-   }
+
+
+    }
     return $currentstring;
 }
  
 sub end_table {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	my $inmemory = '';
 	my $output = '';
 	my $WARNING='';
         #width of columns from TeXwidth attributes
+
 	for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
 	    for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
 		if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
@@ -2168,13 +2210,13 @@ sub end_table {
 	for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
 	    for (my $jn=0;$jn<=$#fwidth;$jn++) {
 		if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
-		    $output.='\vspace*{-6 mm}\begin{center}';
+		    $output.=&center_correction().'\begin{center}';
 		} elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
 		    $output.=' \hfill \llap{'
 		}
 		$output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
 		if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
-		    $output.='\end{center}\vspace*{-6 mm}';
+		    $output.='\end{center}';#.&center_correction();
 		} elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
 		    $output.='} ';
 		}
@@ -2187,6 +2229,32 @@ sub end_table {
 	$Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
 	if ($#Apache::londefdef::table > 0) {	    
 	    my $inmemory = $Apache::londefdef::table[-1]{'output'};
+	    # Figure out max/and min width  by summing us and then
+	    # apply that to the current column of the table we nest in
+	    # if it's larger than the current width or the current width
+	    # is undefined.
+	    #
+	    my $min_nested_width = 0;
+	    my $max_nested_width = 0;
+	    for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
+		$min_nested_width +=  $min_len[$col];
+		$max_nested_width +=  $max_len[$col];
+		
+	    }
+	    # Fudge in an extra 5 mm for borders etc:
+	    
+	    $min_nested_width += 5;
+	    $max_nested_width += 5;
+
+	    my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
+	    my $outer_row    = $Apache::londefdef::table[-2]{'row_number'};
+	    if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
+		$Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
+	    }
+	    if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
+		$Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
+	    }
+
 	    pop @Apache::londefdef::table;
 	    push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
 	} else {
@@ -2202,7 +2270,7 @@ sub end_table {
 sub start_tr {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	$Apache::londefdef::table[-1]{'row_number'}++;
@@ -2213,6 +2281,10 @@ sub start_tr {
 	    push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
 	}
 	push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
+	#
+	#  Need to save the number of table columns to preserve the max # columns.
+	#
+	$Apache::londefdef::table[-1]{'prior_columns'}   = $Apache::londefdef::table[-1]{'counter_columns'};
 	$Apache::londefdef::table[-1]{'counter_columns'} = -1;
 	push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
 	push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
@@ -2226,12 +2298,20 @@ sub start_tr {
 sub end_tr {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = &end_p();	# Close any pending <p> in the row.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];     
     } elsif ($target eq 'tex') {
 	if ($Apache::londefdef::TD_redirection) {
 	    &end_td_tex($parstack,$parser,$safeeval);    
 	}
+	# Counter columns must be the maximum number of columns seen
+	# in the table so far so:
+	if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
+	    $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
+	}
+
+
+	
     }
     return $currentstring;
 }
@@ -2240,7 +2320,7 @@ sub end_tr {
 sub start_td {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	$Apache::londefdef::TD_redirection = 1;
@@ -2364,17 +2444,26 @@ sub end_td_tex {
 	    push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
 	}        
     }
-	for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {         
-	    $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
-	}
+    # Substitute all of the tables nested in this cell in their appropriate places.
+
+
+    my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
+    for (my $in=0; $in<=$nested_count; $in++) {    
+	my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
+	$nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
+	# $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
+	$data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
+
+    }
+    # Should be be killing off the 'include' elements as they're used up?
     push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
-    return'';
+    return '';
 }
 
 sub end_td {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
         $Apache::londefdef::TD_redirection =0;
@@ -2387,7 +2476,7 @@ sub end_td {
 sub start_th {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	$Apache::londefdef::TD_redirection = 1;
@@ -2503,7 +2592,7 @@ sub end_th_tex {
 sub end_th {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = &end_p();	# Close any open <p> in the row.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];     
     } elsif ($target eq 'tex') {
         $Apache::londefdef::TD_redirection =0;
@@ -2524,11 +2613,13 @@ sub end_th {
 #         (Note there seems to also be support for this as a % of page size)
 #      
 sub start_img {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
     my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
 					 undef,1);
-    if (not $src and ($target eq 'web' or $target eq 'tex')) { 
-	my $inside = &Apache::lonxml::get_all_text("/img",$parser);
+    if (! $src && 
+	($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
+	) { 
+	my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
 	return '';
     }
     &Apache::lonxml::extlink($src);
@@ -2537,7 +2628,7 @@ sub start_img {
 
    # Render unto browsers that which are the browser's...
 
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	if ($env{'browser.imagesuppress'} ne 'on') {
 	    $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
 	} else {
@@ -2564,8 +2655,9 @@ sub start_img {
 						  $safeeval,
 						  undef,1));
 	if(!$align) {
+	    # disabled for now see BUG#4535
 	    if (&is_inside_of($tagstack, "table")) {
-		$align = "right";      # Force wraptext use. 
+		$align = "top";      # Force top of image to top of table cell 
 	    } else {
 		$align = "bottom";	# This is html's default so it's ours too.
 	    }
@@ -2728,7 +2820,7 @@ sub start_img {
 sub end_img {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring = '';
@@ -2746,7 +2838,7 @@ sub start_applet {
 					   undef,1);
     &Apache::lonxml::extlink($archive);
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	if ($env{'browser.appletsuppress'} ne 'on') {
 	    $currentstring = &Apache::lonenc::encrypt_ref($token,
 							  {'code'=>$code,
@@ -2779,7 +2871,7 @@ sub start_applet {
 sub end_applet {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];
     } elsif ($target eq 'tex') {
     } 
@@ -2792,7 +2884,7 @@ sub start_embed {
     my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
     &Apache::lonxml::extlink($src);
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	if ($env{'browser.embedsuppress'} ne 'on') {
 	    $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
 	} else {
@@ -2811,7 +2903,7 @@ sub start_embed {
 sub end_embed {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {  
     } 
@@ -2831,7 +2923,7 @@ sub start_param {
     my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
     &Apache::lonxml::extlink($src);
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	my %toconvert;
 	my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
 	if ($src) { $toconvert{'src'}= $src; }
@@ -2850,7 +2942,7 @@ sub start_param {
 sub end_param {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
     } 
@@ -2888,7 +2980,7 @@ sub end_allow {
 sub start_frameset {
     my ($target,$token) = @_;
     my $currentstring = '';	# Close any pending para.
-    if ($target eq 'web') { 
+    if ($target eq 'web' || $target eq 'webgrade') { 
 	if (!$Apache::lonxml::registered &&
 	    $env{'request.state'} eq 'published') {
 	    $currentstring.='<head>'.
@@ -2924,7 +3016,7 @@ sub start_frameset {
 sub end_frameset {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];
     }
     return $currentstring;
@@ -2934,7 +3026,7 @@ sub end_frameset {
 sub start_xmp {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\begin{verbatim}';
@@ -2945,7 +3037,7 @@ sub start_xmp {
 sub end_xmp {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\end{verbatim}';
@@ -2957,7 +3049,7 @@ sub end_xmp {
 sub start_pre {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = &end_p();	# close off pending <p>
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\begin{verbatim}';
@@ -2968,7 +3060,7 @@ sub start_pre {
 sub end_pre {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\end{verbatim}';
@@ -2980,7 +3072,7 @@ sub end_pre {
 sub start_insert {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
 	$currentstring .= '<b>'.$display.'</b>';;
     }
@@ -2990,7 +3082,7 @@ sub start_insert {
 sub end_insert {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= '';
     }
     return $currentstring;
@@ -3000,7 +3092,7 @@ sub end_insert {
 sub start_externallink {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
 	$currentstring .= '<b>'.$display.'</b>';;
     }
@@ -3010,7 +3102,7 @@ sub start_externallink {
 sub end_externallink {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= '';
     }
     return $currentstring;
@@ -3040,7 +3132,7 @@ sub end_blankspace {
 sub start_abbr {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3049,7 +3141,7 @@ sub start_abbr {
 sub end_abbr {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3059,7 +3151,7 @@ sub end_abbr {
 sub start_acronym {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3068,7 +3160,7 @@ sub start_acronym {
 sub end_acronym {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3078,7 +3170,7 @@ sub end_acronym {
 sub start_area {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3087,7 +3179,7 @@ sub start_area {
 sub end_area {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3097,7 +3189,7 @@ sub end_area {
 sub start_base {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     }
     return $currentstring;
@@ -3106,7 +3198,7 @@ sub start_base {
 sub end_base {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3116,7 +3208,7 @@ sub end_base {
 sub start_bdo {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3125,7 +3217,7 @@ sub start_bdo {
 sub end_bdo {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3135,7 +3227,7 @@ sub end_bdo {
 sub start_bgsound {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3144,7 +3236,7 @@ sub start_bgsound {
 sub end_bgsound {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3154,7 +3246,7 @@ sub end_bgsound {
 sub start_blink {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3163,7 +3255,7 @@ sub start_blink {
 sub end_blink {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3173,7 +3265,7 @@ sub end_blink {
 sub start_blockquote {
     my ($target,$token) = @_;
     my $currentstring = &end_p();	# Close any unclosed <p>
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];     
     } 
     return $currentstring;
@@ -3182,7 +3274,7 @@ sub start_blockquote {
 sub end_blockquote {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3192,7 +3284,7 @@ sub end_blockquote {
 sub start_button {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3201,7 +3293,7 @@ sub start_button {
 sub end_button {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3211,7 +3303,7 @@ sub end_button {
 sub start_caption {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3220,7 +3312,7 @@ sub start_caption {
 sub end_caption {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3230,7 +3322,7 @@ sub end_caption {
 sub start_col {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3239,7 +3331,7 @@ sub start_col {
 sub end_col {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3249,7 +3341,7 @@ sub end_col {
 sub start_colgroup {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3258,7 +3350,7 @@ sub start_colgroup {
 sub end_colgroup {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3268,7 +3360,7 @@ sub end_colgroup {
 sub start_del {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3277,7 +3369,7 @@ sub start_del {
 sub end_del {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3287,7 +3379,7 @@ sub end_del {
 sub start_fieldset {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3296,7 +3388,7 @@ sub start_fieldset {
 sub end_fieldset {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3306,7 +3398,7 @@ sub end_fieldset {
 sub start_frame {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3315,7 +3407,7 @@ sub start_frame {
 sub end_frame {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3325,7 +3417,7 @@ sub end_frame {
 sub start_iframe {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3334,7 +3426,7 @@ sub start_iframe {
 sub end_iframe {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3344,7 +3436,7 @@ sub end_iframe {
 sub start_ins {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3353,7 +3445,7 @@ sub start_ins {
 sub end_ins {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3363,7 +3455,7 @@ sub end_ins {
 sub start_isindex {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3372,7 +3464,7 @@ sub start_isindex {
 sub end_isindex {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3382,7 +3474,7 @@ sub end_isindex {
 sub start_keygen {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3391,7 +3483,7 @@ sub start_keygen {
 sub end_keygen {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3401,7 +3493,7 @@ sub end_keygen {
 sub start_label {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3410,7 +3502,7 @@ sub start_label {
 sub end_label {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3420,7 +3512,7 @@ sub end_label {
 sub start_layer {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3429,7 +3521,7 @@ sub start_layer {
 sub end_layer {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3439,7 +3531,7 @@ sub end_layer {
 sub start_legend {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3448,7 +3540,7 @@ sub start_legend {
 sub end_legend {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3456,7 +3548,7 @@ sub end_legend {
 
 #-- <link> tag (end tag forbidden)
 sub start_link {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
@@ -3470,7 +3562,7 @@ sub start_link {
 sub end_link {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3480,7 +3572,7 @@ sub end_link {
 sub start_marquee {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3489,7 +3581,7 @@ sub start_marquee {
 sub end_marquee {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3499,7 +3591,7 @@ sub end_marquee {
 sub start_multicol {
     my ($target,$token) = @_;
     my $currentstring = &end_p();	# Close any pending <p>
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];     
     } 
     return $currentstring;
@@ -3508,7 +3600,7 @@ sub start_multicol {
 sub end_multicol {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3518,7 +3610,7 @@ sub end_multicol {
 sub start_nobr {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     }  elsif ($target eq 'tex') {
 	$currentstring='\mbox{';
@@ -3529,7 +3621,7 @@ sub start_nobr {
 sub end_nobr {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     }   elsif ($target eq 'tex') {
 	$currentstring='}';
@@ -3541,7 +3633,7 @@ sub end_nobr {
 sub start_noembed {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3550,7 +3642,7 @@ sub start_noembed {
 sub end_noembed {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3560,7 +3652,7 @@ sub end_noembed {
 sub start_noframes {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3569,7 +3661,7 @@ sub start_noframes {
 sub end_noframes {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3579,7 +3671,7 @@ sub end_noframes {
 sub start_nolayer {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3588,7 +3680,7 @@ sub start_nolayer {
 sub end_nolayer {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3598,7 +3690,7 @@ sub end_nolayer {
 sub start_noscript {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3607,7 +3699,7 @@ sub start_noscript {
 sub end_noscript {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3617,7 +3709,7 @@ sub end_noscript {
 sub start_object {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3626,7 +3718,7 @@ sub start_object {
 sub end_object {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3636,7 +3728,7 @@ sub end_object {
 sub start_optgroup {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3645,7 +3737,7 @@ sub start_optgroup {
 sub end_optgroup {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3655,7 +3747,7 @@ sub end_optgroup {
 sub start_samp {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	$currentstring='\texttt{';
@@ -3666,7 +3758,7 @@ sub start_samp {
 sub end_samp {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } elsif ($target eq 'tex') {
 	$currentstring='}';
@@ -3678,7 +3770,7 @@ sub end_samp {
 sub start_server {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3687,7 +3779,7 @@ sub start_server {
 sub end_server {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3697,7 +3789,7 @@ sub end_server {
 sub start_spacer {
     my ($target,$token) = @_;
     my $currentstring = &end_p();	# Close off any open <p> tag.
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];     
     } 
     return $currentstring;
@@ -3706,7 +3798,7 @@ sub start_spacer {
 sub end_spacer {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3716,7 +3808,7 @@ sub end_spacer {
 sub start_span {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3725,7 +3817,7 @@ sub start_span {
 sub end_span {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3735,7 +3827,7 @@ sub end_span {
 sub start_tbody {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3744,7 +3836,7 @@ sub start_tbody {
 sub end_tbody {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3754,7 +3846,7 @@ sub end_tbody {
 sub start_tfoot {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3763,7 +3855,7 @@ sub start_tfoot {
 sub end_tfoot {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3773,7 +3865,7 @@ sub end_tfoot {
 sub start_thead {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3782,7 +3874,7 @@ sub start_thead {
 sub end_thead {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3792,7 +3884,7 @@ sub end_thead {
 sub start_var {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	$currentstring = '\textit{'; 
@@ -3803,7 +3895,7 @@ sub start_var {
 sub end_var {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring = '}'; 
@@ -3815,7 +3907,7 @@ sub end_var {
 sub start_wbr {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3824,7 +3916,7 @@ sub start_wbr {
 sub end_wbr {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3833,7 +3925,7 @@ sub end_wbr {
 #-- <hideweboutput> tag
 sub start_hideweboutput {
     my ($target,$token) = @_;
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	&Apache::lonxml::startredirection();     
     } 
     return '';
@@ -3842,7 +3934,7 @@ sub start_hideweboutput {
 sub end_hideweboutput {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = &Apache::lonxml::endredirection();    
     } 
     return '';
@@ -4056,7 +4148,11 @@ sub file_path {
     } 
     return $file,$path;
 }
-
+#  Converts a measurement in to mm from any of 
+#  the other valid LaTeX units of measure.
+#  If the units of measure are missing from the 
+#  parameter, it is assumed to be in and returned
+#  with mm units of measure
 sub recalc {
     my $argument = shift;
     if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}