--- loncom/xml/lontexconvert.pm	2010/01/26 01:16:30	1.101
+++ loncom/xml/lontexconvert.pm	2010/06/10 15:54:06	1.104
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # TeX Conversion Module
 #
-# $Id: lontexconvert.pm,v 1.101 2010/01/26 01:16:30 faziophi Exp $
+# $Id: lontexconvert.pm,v 1.104 2010/06/10 15:54:06 bisitz Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -326,6 +326,7 @@ sub converted {
 
 sub to_convert {
     my ($string) = @_;
+    &init_tth();
     $string=~s/\<br\s*\/?\>/ /gs;
 #    $string=~s/\s/ /gs;
     $string=&HTML::Entities::decode($string);
@@ -334,7 +335,6 @@ sub to_convert {
 
 sub smiley {
     my $expression=shift;
-    if ($env{'browser.imagesuppress'} eq 'on') { return $expression; }
     my %smileys=(
     	 '\:\-*\)' => 'face-smile.png',
 		 '8\-\)'  => 'face-cool.png',
@@ -373,7 +373,6 @@ sub smiley {
 sub msgtexconverted {
     my ($message,$email) = @_;
     $errorstring='';
-    &init_tth();
     my $outmessage='';
     my $tex=0;
     foreach my $fragment (split(/(?:\&lt\;|\<)\/*m\s*(?:\&gt\;|\>)/i,$message)) {
@@ -394,15 +393,16 @@ sub msgtexconverted {
     foreach my $fragment (split(/(?:\&lt\;|\<)\/*algebra\s*(?:\&gt\;|\>)/i,
 				$message)) {
 	if ($tex) {
+        my $algebra = &algebra($fragment, 'web', undef, undef, undef, undef, 'tth');
 	    if ($email) {
-		$outmessage.='</pre><tt>'.&algebra($fragment,'web').'</tt><pre>';
+		$outmessage.='</pre><tt>'.$algebra.'</tt><pre>';
 		$tex=0;
 	    } else {
-		$outmessage.=&algebra($fragment,'web');
+		$outmessage.=$algebra;
 		$tex=0;
 	    }
 	} else {
-            $outmessage.=$fragment;
+        $outmessage.=$fragment;
 	    $tex=1;
 	}
     }
@@ -415,9 +415,9 @@ sub msgtexconverted {
 
 sub algebra {
     use AlgParser;
-
-    my ($string,$target,$style,$parstack,$safeeval)=@_;
+    my ($string,$target,$style,$parstack,$safeeval,$tth)=@_;
     my $parser = new AlgParserWithImplicitExpand;
+    if ($tth eq 'tth') {&init_tth();}
     $string=&prepare_algebra($string);
     my $ret = $parser->parse($string);
     my $result='['.&mt('Algebra unconverted due to previous errors').']';