--- loncom/xml/londefdef.pm	2001/12/07 22:23:37	1.36
+++ loncom/xml/londefdef.pm	2002/05/22 21:07:45	1.62
@@ -1,7 +1,9 @@
+
 # The LearningOnline Network with CAPA
 # Tags Default Definition Module 
 #
-# $Id: londefdef.pm,v 1.36 2001/12/07 22:23:37 albertel Exp $
+# $Id: londefdef.pm,v 1.62 2002/05/22 21:07:45 sakharuk Exp $
+# 
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -39,15 +41,18 @@
 #
 # last modified 06/26/00 by Alexander Sakharuk
 # 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer
+# 01/18 Alex Sakharuk
 
 package Apache::londefdef; 
 
+use Apache::lonnet;
 use strict;
 use Apache::lonxml;
+use Apache::File();
 
-sub BEGIN {
+BEGIN {
 
-    &Apache::lonxml::register('Apache::londefdef',('m','html','head','map','select','option','input','textarea','form','meta','title','body','center','b','strong','table','dt','h1','h2','h3','h4','h5','h6','cite','i','address','dd','dl','dir','ol','ul','menu','dfn','kbd','tt','code','em','q','p','br','big','small','basefont','font','s','sub','strike','sup','hr','a','li','u','output','param','applet','img','embed','tr','td','allow','frameset'));
+    &Apache::lonxml::register('Apache::londefdef',('m','html','head','map','select','option','input','textarea','form','meta','title','body','center','b','strong','dt','h1','h2','h3','h4','h5','h6','cite','i','address','dd','dl','dir','ol','ul','menu','dfn','kbd','tt','code','em','q','p','br','big','small','basefont','font','s','sub','strike','sup','hr','a','li','u','output','param','applet','img','embed','allow','frameset','pre','insert','externallink','table','tr','th','td'));
 
 }
 
@@ -68,15 +73,21 @@ sub start_m {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
   my $currentstring = '';
   if ($target eq 'web') {
+    $Apache::lonxml::prevent_entity_encode++;
     my $inside = &Apache::lonxml::get_all_text("/m",$$parser[-1]);
     $inside ='\\documentstyle{article}'.$inside;
-    #&Apache::lonxml::debug("M is starting with:$inside:");
+    &Apache::lonxml::debug("M is starting with:$inside:");
     my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
     if ($eval eq 'on') {
       $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
       #&Apache::lonxml::debug("M is evaulated to:$inside:");
     }
     $currentstring = &Apache::lontexconvert::converted(\$inside);
+    if ($Apache::lontexconvert::errorstring) {
+      &Apache::lonxml::warning("tth error: ".
+			       $Apache::lontexconvert::errorstring);
+      $Apache::lontexconvert::errorstring='';
+    }
     #&Apache::lonxml::debug("M is ends with:$currentstring:");
   } elsif ($target eq 'tex') {
     $currentstring = "";
@@ -87,6 +98,7 @@ sub end_m {
   my ($target,$token) = @_;
   my $currentstring = '';
   if ($target eq 'web') {
+    $Apache::lonxml::prevent_entity_encode--;
   } elsif ($target eq 'tex') {
     $currentstring = "";
   } elsif ($target eq 'meta') {
@@ -97,20 +109,20 @@ sub end_m {
       sub start_html {
 	    my ($target,$token) = @_;
             my $currentstring = '';
+	    if ($ENV{'browser.mathml'}) {
+	      &tth::ttminit();
+	    } else {
+	      &tth::tthinit();
+	    }
             if ($target eq 'web') {
               $currentstring = &Apache::lonxml::xmlbegin().
                                &Apache::lonxml::fontsettings();     
 	    } elsif ($target eq 'tex') {
+	      @Apache::londefdef::table = ();
 	      $currentstring .= '\documentclass[letterpaper]{article}
-                                 \setlength{\oddsidemargin}{-40pt}
-                                 \setlength{\evensidemargin}{-60pt}
-                                 \setlength{\topmargin}{200pt}
-                                 \setlength{\textwidth}{4.4in}
-                                 \setlength{\textheight}{6.8in}
-                                 \setlength{\parindent}{20pt}
-                                 \setlength{\marginparwidth}{90pt}
-                                 \setlength{\textfloatsep}{8pt plus 2.0pt minus 4.0pt}
-                                 \newcommand{\keephidden}[1]{}';
+                                 \newcommand{\keephidden}[1]{}           
+                                 \usepackage[dvips]{graphicx}
+                                 \usepackage{epsfig}';
 	    }
 	   return $currentstring;
 	}
@@ -135,7 +147,7 @@ sub end_m {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
-              $currentstring = &Apache::lonxml::registerurl().
+              $currentstring = &Apache::lonxml::registerurl(undef,$target).
                                $token->[2];    
             } 
 	   return $currentstring;
@@ -312,11 +324,13 @@ sub end_m {
       }
 #-- <body> tag
         sub start_body {
-	    my ($target,$token) = @_;
+            my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+#	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	      if (!$Apache::lonxml::registered) {
-		$currentstring.='<head>'.&Apache::lonxml::registerurl().'</head>';
+		$currentstring.='<head>'.
+		    &Apache::lonxml::registerurl(undef,$target).'</head>';
 	      }
 	      my $onLoad='';
 	      foreach my $key (keys(%{$token->[2]})) {
@@ -325,7 +339,8 @@ sub end_m {
 		  delete($token->[2]->{$key});
 		}
 	      }
-	      $token->[2]->{'onLoad'}=$onLoad.&Apache::lonxml::loadevents();
+	      $token->[2]->{'onLoad'}=&Apache::lonxml::loadevents().
+		                       ';'.$onLoad;
 	      my $onUnload='';
 	      foreach my $key (keys(%{$token->[2]})) {
 		if ($key =~ /^onunload$/i) {
@@ -333,14 +348,21 @@ sub end_m {
 		  delete($token->[2]->{$key});
 		}
 	      }
-	      $token->[2]->{'onUnload'}=$onUnload.
-		&Apache::lonxml::unloadevents();
+	      $token->[2]->{'onUnload'}=&Apache::lonxml::unloadevents().
+		                         ';'.$onUnload;
 
 	      $currentstring .= '<'.$token->[1];
-	      map {
-		$currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
-	      } keys %{$token->[2]};
+	      foreach (keys %{$token->[2]}) {
+	      	$currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
+	      }
 	      $currentstring.='>';
+	      if ($ENV{'request.state'} ne 'published') {
+		$currentstring.=(<<EDITBUTTON);
+		<form method="post">
+		<input type="submit" name="editmode" value="Edit" />
+		</form>
+EDITBUTTON
+	      }
        	    } elsif ($target eq 'tex') {
               $currentstring = '\begin{document}';  
 	    } 
@@ -509,7 +531,7 @@ sub end_m {
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= '\large{\textbf';
+		$currentstring .= '\large{\textbf{';
 	    } 
            return $currentstring;
 	}
@@ -818,7 +840,7 @@ sub end_m {
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= '\\';
+		$currentstring .= '\\\\';
 	    } elsif ($target eq 'latexsource') {
 		$currentstring .= '\\';
 	    } 
@@ -841,7 +863,7 @@ sub end_m {
 	    } elsif ($target eq 'tex') {
 		$currentstring .= '\large{';
 	    } elsif ($target eq 'latexsource') {
-		$currentstring .= '\large{';
+		$currentstring .= '{\Large ';
 	    }  
            return $currentstring;
 	}
@@ -864,9 +886,9 @@ sub end_m {
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= '\footnotesize{';
+		$currentstring .= '{\footnotesize ';
 	    } elsif ($target eq 'latexsource') {
-		$currentstring .= '\footnotesize{';
+		$currentstring .= '{\footnotesize ';
 	    } 
            return $currentstring;
 	}
@@ -901,17 +923,21 @@ sub end_m {
       }
 #-- <font> tag
          sub start_font {
-	    my ($target,$token) = @_;
+	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
             my $currentstring = '';
             if ($target eq 'web') {
+	      my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
+	      if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode++;}
               $currentstring = $token->[4];     
 	    } 
 	   return $currentstring;
 	}
         sub end_font {
-	    my ($target,$token) = @_;
+	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
             my $currentstring = '';
             if ($target eq 'web') {
+	      my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
+	      if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode--;}
               $currentstring = $token->[2];    
             } 
 	   return $currentstring;
@@ -1105,7 +1131,7 @@ sub end_m {
             if ($target eq 'web') {
               $currentstring = $token->[4];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\begin{itemize} ";  
+              $currentstring = '\begin{itemize}';  
 	    } 
 	   return $currentstring;
 	}
@@ -1115,7 +1141,7 @@ sub end_m {
             if ($target eq 'web') {
               $currentstring = $token->[2];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\end{itemize}";  
+              $currentstring = '\end{itemize}';  
 	    } 
 	   return $currentstring;
 	}
@@ -1168,7 +1194,7 @@ sub end_m {
             if ($target eq 'web') {
               $currentstring = $token->[4];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\begin{enumerate} ";  
+              $currentstring = '\begin{enumerate}';  
 	    } 
 	   return $currentstring;
 	}
@@ -1178,7 +1204,7 @@ sub end_m {
             if ($target eq 'web') {
               $currentstring = $token->[2];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\end{enumerate}";  
+              $currentstring = '\end{enumerate}';  
 	    } 
 	   return $currentstring;
 	}
@@ -1189,7 +1215,7 @@ sub end_m {
             if ($target eq 'web') {
               $currentstring = $token->[4];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\begin{description} ";  
+              $currentstring = '\begin{description}';  
 	    } 
 	   return $currentstring;
 	}
@@ -1199,7 +1225,7 @@ sub end_m {
             if ($target eq 'web') {
               $currentstring = $token->[2];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\end{description}";  
+              $currentstring = '\end{description}';  
 	    } 
 	   return $currentstring;
 	}
@@ -1210,7 +1236,7 @@ sub end_m {
             if ($target eq 'web') {
               $currentstring = $token->[4];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = "\\item[ ";  
+              $currentstring = '\item[';  
 	    } 
 	   return $currentstring;
 	}
@@ -1220,7 +1246,7 @@ sub end_m {
             if ($target eq 'web') {
               $currentstring = $token->[2];    
             } elsif ($target eq 'tex') {
-              $currentstring = "]";  
+              $currentstring = ']';  
 	    } 
 	   return $currentstring;
 	}
@@ -1243,12 +1269,26 @@ sub end_m {
 	}
 #-- <table> tag
         sub start_table {
-	    my ($target,$token) = @_;
+	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
               $currentstring = $token->[4];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = "";  
+		my $aa = {};
+		push @Apache::londefdef::table, $aa; 
+		$Apache::londefdef::table[-1]{'row_number'} = -1;
+		$Apache::londefdef::table[-1]{'output'} = '\begin{tabular} ';
+		my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
+		unless (defined $border) { $border = 0; }
+		if ($border) { 
+		    $Apache::londefdef::table[-1]{'hinc'} = '\hline '; 
+		    $Apache::londefdef::table[-1]{'vinc'} = '&'; 
+		    $Apache::londefdef::table[-1]{'vvinc'} = '|';
+		} else {
+		    $Apache::londefdef::table[-1]{'hinc'} = ''; 
+		    $Apache::londefdef::table[-1]{'vinc'} = ''; 
+		    $Apache::londefdef::table[-1]{'vvinc'} = '';
+		}
 	    } 
 	   return $currentstring;
 	}
@@ -1258,74 +1298,213 @@ sub end_m {
             if ($target eq 'web') {
               $currentstring = $token->[2];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = "";  
-	    } 
+		my $inmemory = '';
+		my $output = '';
+		my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
+		my $in;
+		for ($in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) {
+		    $header_of_table .= $Apache::londefdef::table[-1]{'columns'}[$in].$Apache::londefdef::table[-1]{'vvinc'};
+		}
+		$header_of_table .= '}';
+		for ($in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
+		    $output .=  $Apache::londefdef::table[-1]{'rowdata'}[$in];
+		    chop $output;
+		    $output .= ' \\\\ ';
+		}
+		$Apache::londefdef::table[-1]{'output'} .= $header_of_table.$output.$Apache::londefdef::table[-1]{'hinc'}.'\end{tabular}';
+		if ($#Apache::londefdef::table > 0) {
+		    $inmemory = $Apache::londefdef::table[-1]{'output'};
+		    pop @Apache::londefdef::table;
+		    $Apache::londefdef::table[-1]{'rowdata'}[$Apache::londefdef::table[-1]{'row_number'}] .= $inmemory;
+		} else {
+		    $currentstring = $Apache::londefdef::table[-1]{'output'};
+		    $currentstring =~ s/\\\\\s+\\\\/\\\\/g; 
+		    pop @Apache::londefdef::table;
+		}
+	    }
 	   return $currentstring;
 	}
 #-- <tr> tag
         sub start_tr {
-	    my ($target,$token) = @_;
+	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
               $currentstring = $token->[4];     
 	    } elsif ($target eq 'tex') {
-	      $currentstring = '';
+		$Apache::londefdef::table[-1]{'row_number'}++;
+		my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval),0,1);
+		if ($alignchar ne '') {
+		    push @ {$Apache::londefdef::table[-1]{'rows'} }, $alignchar;
+		} else {
+		    push @ {$Apache::londefdef::table[-1]{'rows'} }, 'c';
+		}
+		push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
+		$Apache::londefdef::table[-1]{'counter_columns'} = -1;
+
 	    } 
 	   return $currentstring;
-	}
+	}        
         sub end_tr {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
-              $currentstring = $token->[2];     
+		$currentstring = $token->[2];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = "";  
-	    } 
+#		$currentstring .= ' START ROW '. $Apache::londefdef::table[-1]{'rowdata'}[$Apache::londefdef::table[-1]{'row_number'}].' END ROW ';
+	    }
 	   return $currentstring;
 	}
 #-- <td> tag
         sub start_td {
-	    my ($target,$token) = @_;
+	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
               $currentstring = $token->[4];     
 	    } elsif ($target eq 'tex') {
-	      $currentstring = '';
+		my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval),0,1);
+		if ($what_to_push eq '') {
+		    $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
+		}
+		    push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
+		$Apache::londefdef::table[-1]{'counter_columns'}++;
+		&Apache::lonxml::startredirection();
+;
 	    } 
 	   return $currentstring;
-	}
+	}        
         sub end_td {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
-              $currentstring = $token->[2];     
+		$currentstring = $token->[2];     
+	    } elsif ($target eq 'tex') {
+		my $current_row = $Apache::londefdef::table[-1]{'row_number'};
+		my $data=&Apache::lonxml::endredirection();
+		@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= $data.' '.$Apache::londefdef::table[-1]{'vinc'};
+	    }
+	   return $currentstring;
+	}
+#-- <th> tag
+        sub start_th {
+	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+            my $currentstring = '';
+            if ($target eq 'web') {
+              $currentstring = $token->[4];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = "";  
+		my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval),0,1);
+		if ($what_to_push eq '') {
+		    $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
+		}
+		    push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
+		$Apache::londefdef::table[-1]{'counter_columns'}++;
+		&Apache::lonxml::startredirection();
+;
 	    } 
 	   return $currentstring;
+	}        
+        sub end_th {
+	    my ($target,$token) = @_;
+            my $currentstring = '';
+            if ($target eq 'web') {
+		$currentstring = $token->[2];     
+	    } elsif ($target eq 'tex') {
+		my $current_row = $Apache::londefdef::table[-1]{'row_number'};
+		my $data=&Apache::lonxml::endredirection();
+		@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\bf{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
+	    }
+	   return $currentstring;
 	}
 #-- <img> tag
-
         sub start_img {
-	    my ($target,$token) = @_;
-            $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=   
+	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+            $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
                                         $token->[2]->{'src'};
             my $currentstring = '';
-            if ($target eq 'web') {
+	    my $width_param = '';
+
+	    if ($target eq 'web') {
               $currentstring = $token->[4];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\begin{figure} ";  
-	    } 
-	   return $currentstring;
+	      my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval); 
+              my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval); 
+	      my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval);
+	      if ($TeXwidth ne '') { 
+		  $width_param = $TeXwidth; 
+	      } elsif ($TeXheight ne '') { 
+		  $width_param = $TeXheight; 
+	      } else {
+		  if ($width ne '') {
+		      $width_param = $width*.3;
+		      if ($width_param <= 900) {
+			  $width_param = '[width='.$width_param.'mm]';
+		      } else {
+			  $width_param = '[width= 9.0 cm]';
+		      }
+		  }
+	      }
+	      my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval);
+	      $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
+	      my $epssrc = $src;
+	      $epssrc =~ s/(\.gif|\.jpg|\.GIF|\.JPG)$/\.eps/;
+	      if (not -e $epssrc) {
+		  my $localfile = $epssrc;
+		  $localfile =~ s/.*(\/res)/$1/;	
+		  my $file;
+		  my $path;	
+		  if ($localfile =~ m!(.*)/([^/]*)$!) {
+		      $file = $2;
+		      $path = $1.'/'; 
+		  }	
+		  my $signal_eps = 0;
+		  my @content_directory = &Apache::lonnet::dirlist($path);
+		  for (my $iy=0;$iy<=$#content_directory;$iy++) {
+		      my @tempo_array = split(/&/,$content_directory[$iy]);
+		      $content_directory[$iy] = $tempo_array[0];
+		      if ($file eq $tempo_array[0]) {
+			  $signal_eps = 1;
+			  last;
+		      }
+		  }
+		  if ($signal_eps) {
+		      my $eps_file = &Apache::lonnet::getfile($localfile);
+		  } else {
+		      $localfile = $src;
+		      $localfile =~ s/.*(\/res)/$1/;	
+		      my $as = &Apache::lonnet::getfile($src);
+		      
+		  }
+	      }
+	      my $file;
+	      my $path;	
+              if ($src =~ m!(.*)/([^/]*)$!) {
+		  $file = $2;
+		  $path = $1.'/'; 
+	      }
+	      my $newsrc = $src;
+	      $newsrc =~ s/(\.gif|\.jpg|\.GIF|\.JPG)$/\.eps/;
+		  $file=~s/(\.gif|\.jpg|\.GIF|\.JPG)$/\.eps/;
+	      if (-e $newsrc) {
+		  if ($path) {
+		      $currentstring .= '\graphicspath{{'.$path.'}}\fbox{\includegraphics'.$width_param.'{'.$file.'}}';
+		  }
+	      } else {
+		  my $temp_file;
+		  my $filename = "/home/httpd/prtspool/$ENV{'user.name'}$ENV{'user.domain'}temp$ENV{'user.login.time'}.dat";
+		  $temp_file = Apache::File->new('>>'.$filename); 
+		  print $temp_file "$src\n";
+		  $currentstring .= '\graphicspath{{/home/httpd/prtspool/}}\fbox{\includegraphics'.$width_param.'{'.$file.'}}';
+	      }
+	    }
+	    return $currentstring;
 	}
         sub end_img {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
-              $currentstring = $token->[2];     
+              $currentstring = $token->[2];
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\end{figure}";  
-	    } 
+              $currentstring = '';
+	    }
 	   return $currentstring;
 	}
 #-- <applet> tag
@@ -1334,41 +1513,41 @@ sub end_m {
 	    my ($target,$token) = @_;
               $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=   
                                         $token->[2]->{'code'};
-              $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=   
+              $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
                                         $token->[2]->{'archive'};
             my $currentstring = '';
             if ($target eq 'web') {
-              $currentstring = $token->[4];     
-	    } elsif ($target eq 'tex') {
-              $currentstring = " \\begin{figure} ";  
-	    } 
-	   return $currentstring;
-	}
-        sub end_applet {
-	    my ($target,$token) = @_;
-            my $currentstring = '';
-            if ($target eq 'web') {
-              $currentstring = $token->[2];     
+              $currentstring = $token->[4];
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\end{figure}";  
+              $currentstring = " \\begin{figure} ";
 	    } 
 	   return $currentstring;
 	}
+sub end_applet {
+    my ($target,$token) = @_;
+    my $currentstring = '';
+    if ($target eq 'web') {
+	$currentstring = $token->[2];
+    } elsif ($target eq 'tex') {
+	$currentstring = " \\end{figure}";
+    } 
+    return $currentstring;
+}
 
 #-- <embed> tag
 
-        sub start_embed {
-	    my ($target,$token) = @_;
-            $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=   
-                                        $token->[2]->{'src'};
-           my $currentstring = '';
-            if ($target eq 'web') {
-              $currentstring = $token->[4];     
-	    } elsif ($target eq 'tex') {
-              $currentstring = " \\begin{figure} ";  
-	    } 
-	   return $currentstring;
-	}
+sub start_embed {    
+    my ($target,$token) = @_;
+    $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
+	$token->[2]->{'src'};
+    my $currentstring = '';
+    if ($target eq 'web') {
+	$currentstring = $token->[4];
+    } elsif ($target eq 'tex') {
+	$currentstring = " \\begin{figure} ";  
+    } 
+    return $currentstring;
+}
         sub end_embed {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -1428,7 +1607,8 @@ sub end_m {
 	  my $currentstring = '';
 	  if ($target eq 'web') { 
 	    if (!$Apache::lonxml::registered) {
-	      $currentstring.='<head>'.&Apache::lonxml::registerurl().'</head>';
+	      $currentstring.='<head>'.
+		  &Apache::lonxml::registerurl(undef,$target).'</head>';
 	    }
 	    $currentstring .= $token->[4];
 	  }
@@ -1442,5 +1622,62 @@ sub end_m {
 	  }
 	  return $currentstring;
 	}
+#-- <pre>
+	sub start_pre {
+	    my ($target,$token) = @_;
+            my $currentstring = '';
+            if ($target eq 'web') {
+	       $currentstring .= $token->[4];
+	    } elsif ($target eq 'tex') {
+		$currentstring .= '\begin{verbatim}';
+	    } 
+           return $currentstring;
+	}
+        sub end_pre {
+	    my ($target,$token) = @_;
+            my $currentstring = '';
+            if ($target eq 'web') {
+	       $currentstring .= $token->[2];
+	    } elsif ($target eq 'tex') {
+		$currentstring .= '\end{verbatim}';
+	    }
+           return $currentstring;
+	}
+#-- <insert>
+	sub start_insert {
+	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+            my $currentstring = '';
+            if ($target eq 'web') {
+		my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval);
+	       $currentstring .= '<b>'.$display.'</b>';;
+	    }
+           return $currentstring;
+	}
+        sub end_insert {
+	    my ($target,$token) = @_;
+            my $currentstring = '';
+            if ($target eq 'web') {
+	       $currentstring .= '';
+	    }
+           return $currentstring;
+	}
+#-- <externallink>
+	sub start_externallink {
+	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+            my $currentstring = '';
+            if ($target eq 'web') {
+		my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval);
+	       $currentstring .= '<b>'.$display.'</b>';;
+	    }
+           return $currentstring;
+	}
+        sub end_externallink {
+	    my ($target,$token) = @_;
+            my $currentstring = '';
+            if ($target eq 'web') {
+	       $currentstring .= '';
+	    }
+           return $currentstring;
+	}
 1;
 __END__