--- loncom/xml/londefdef.pm	2001/05/04 17:38:22	1.29
+++ loncom/xml/londefdef.pm	2002/01/17 17:42:34	1.40
@@ -1,6 +1,42 @@
 # The LearningOnline Network with CAPA
 # Tags Default Definition Module 
 #
+# $Id: londefdef.pm,v 1.40 2002/01/17 17:42:34 albertel Exp $
+#
+# Copyright Michigan State University Board of Trustees
+#
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
+#
+# LON-CAPA is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# LON-CAPA is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
+#
+# Copyright for TtHfunc and TtMfunc by Ian Hutchinson. 
+# TtHfunc and TtMfunc (the "Code") may be compiled and linked into 
+# binary executable programs or libraries distributed by the 
+# Michigan State University (the "Licensee"), but any binaries so 
+# distributed are hereby licensed only for use in the context
+# of a program or computational system for which the Licensee is the 
+# primary author or distributor, and which performs substantial 
+# additional tasks beyond the translation of (La)TeX into HTML.
+# The C source of the Code may not be distributed by the Licensee
+# to any other parties under any circumstances.
+#
+#
 # last modified 06/26/00 by Alexander Sakharuk
 # 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer
 
@@ -9,13 +45,13 @@ package Apache::londefdef;
 use strict;
 use Apache::lonxml;
 
-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'));
+    &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'));
 
 }
 
-#===================================================================== TAG SUBROUTINES
+#======================= TAG SUBROUTINES =====================
 #-- <output>
 sub start_output {
   my ($target) = @_;
@@ -28,39 +64,64 @@ sub end_output {
   return '';
 }
 #-- <m> tag
-        sub start_m {
-	    my ($target,$token,$parstack,$parser) = @_;
-            my $currentstring = '';
-            if ($target eq 'web') {
-		my $inside = &Apache::lonxml::get_all_text("/m",$$parser[$#$parser]); 
-                $inside ='\\documentstyle{article}'.$inside;
-#          &Apache::lonxml::debug($inside);
-                $currentstring = &Apache::lontexconvert::converted(\$inside);
-#          &Apache::lonxml::debug($currentstring);
-
-	    } elsif ($target eq 'tex') {
-              $currentstring = "";
-            }
-	   return $currentstring;
-	}
-        sub end_m {
-	    my ($target,$token) = @_;
-            my $currentstring = '';
-            if ($target eq 'web') {
-            } elsif ($target eq 'tex') {
-              $currentstring = "";
-	    } elsif ($target eq 'meta') {
-            }
-	   return $currentstring;
-	}
-#-------------------------------------------------------------------------- <html> tag    
+sub start_m {
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+  my $currentstring = '';
+  if ($target eq 'web') {
+    my $inside = &Apache::lonxml::get_all_text("/m",$$parser[-1]);
+    $inside ='\\documentstyle{article}'.$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 = "";
+  }
+  return $currentstring;
+}
+sub end_m {
+  my ($target,$token) = @_;
+  my $currentstring = '';
+  if ($target eq 'web') {
+  } elsif ($target eq 'tex') {
+    $currentstring = "";
+  } elsif ($target eq 'meta') {
+  }
+  return $currentstring;
+}
+#-- <html> tag    
       sub start_html {
 	    my ($target,$token) = @_;
-            my $currentstring = '';
+            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') {
+	      $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]{}';
+	    }
 	   return $currentstring;
 	}
         sub end_html {
@@ -68,10 +129,10 @@ sub end_output {
             my $currentstring = '';
             if ($target eq 'web') {
 		$currentstring = &Apache::lonxml::xmlend();
-            } 
+	    }
 	   return $currentstring;
 	}
-#-------------------------------------------------------------------------- <head> tag
+#-- <head> tag
       sub start_head {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -89,7 +150,7 @@ sub end_output {
             } 
 	   return $currentstring;
 	}
-#--------------------------------------------------------------------------- <map> tag
+#-- <map> tag
       sub start_map {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -106,8 +167,7 @@ sub end_output {
             } 
 	   return $currentstring;
 	}
-
-#------------------------------------------------------------------------ <select> tag
+#-- <select> tag
       sub start_select {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -124,7 +184,7 @@ sub end_output {
             } 
 	   return $currentstring;
 	}
-#------------------------------------------------------------------------ <option> tag
+#-- <option> tag
       sub start_option {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -141,7 +201,7 @@ sub end_output {
             } 
 	   return $currentstring;
 	}
-#------------------------------------------------------------------------- <input> tag
+#-- <input> tag
       sub start_input {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -158,7 +218,7 @@ sub end_output {
             } 
 	   return $currentstring;
 	}
-#---------------------------------------------------------------------- <textarea> tag
+#-- <textarea> tag
       sub start_textarea {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -175,7 +235,7 @@ sub end_output {
             } 
 	   return $currentstring;
 	}
-#-------------------------------------------------------------------------- <form> tag
+#-- <form> tag
       sub start_form {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -192,12 +252,14 @@ sub end_output {
             } 
 	   return $currentstring;
 	}
-#------------------------------------------------------------------------- <title> tag
+#-- <title> tag
       sub start_title {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
               $currentstring = $token->[4];     
+	    } elsif ($target eq 'tex') {
+              $currentstring .= '\keephidden{' 
 	    }
             if ($target eq 'meta') {
 		$currentstring='<title>';
@@ -210,16 +272,18 @@ sub end_output {
             my $currentstring = '';
             if ($target eq 'web') {
               $currentstring = $token->[2];    
-            }
+            } elsif ($target eq 'tex') {
+              $currentstring .= '}';
+	    }  
             if ($target eq 'meta') {
                &end_output();
                $currentstring='</title>';
             } 
 	   return $currentstring;
 	}
-#-------------------------------------------------------------------------- <meta> tag
+#-- <meta> tag
       sub start_meta {
-	    my ($target,$token,$parstack,$parser) = @_;
+	    my ($target,$token,$tagstack,$parstack,$parser) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	      my $args='';
@@ -245,7 +309,7 @@ sub end_output {
 	   return $currentstring;
 	}
       sub end_meta {
-	my ($target,$token,$parstack,$parser) = @_;
+	my ($target,$token,$tagstack,$parstack,$parser) = @_;
 	my $currentstring = '';
 	if ($target eq 'web') {
 	  my $args='';
@@ -256,21 +320,46 @@ sub end_output {
 	} 
 	return $currentstring;
       }
-#-------------------------------------------------------------------------- <body> tag
+#-- <body> tag
         sub start_body {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
-		$token->[2]->{'onLoad'}.=&Apache::lonxml::loadevents();
-		$token->[2]->{'onUnload'}.=&Apache::lonxml::unloadevents();
-             
-		$currentstring = '<'.$token->[1];
-                map {
-		    $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
-                } keys %{$token->[2]};
-                $currentstring.='>';
+	      if (!$Apache::lonxml::registered) {
+		$currentstring.='<head>'.&Apache::lonxml::registerurl().'</head>';
+	      }
+	      my $onLoad='';
+	      foreach my $key (keys(%{$token->[2]})) {
+		if ($key =~ /^onload$/i) {
+		  $onLoad.=$token->[2]->{$key}.';';
+		  delete($token->[2]->{$key});
+		}
+	      }
+	      $token->[2]->{'onLoad'}=$onLoad.&Apache::lonxml::loadevents();
+	      my $onUnload='';
+	      foreach my $key (keys(%{$token->[2]})) {
+		if ($key =~ /^onunload$/i) {
+		  $onUnload.=$token->[2]->{$key}.';';
+		  delete($token->[2]->{$key});
+		}
+	      }
+	      $token->[2]->{'onUnload'}=$onUnload.
+		&Apache::lonxml::unloadevents();
+
+	      $currentstring .= '<'.$token->[1];
+	      foreach (keys %{$token->[2]}) {
+	      	$currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
+	      }
+	      $currentstring.='>';
+	      if ($ENV{'request.state'} ne 'published') {
+		$currentstring.=(<<EDITBUTTON);
+		<form method="post">
+		<input type="submit" name="showmode" value="Edit" />
+		</form>
+EDITBUTTON
+	      }
        	    } elsif ($target eq 'tex') {
-              $currentstring = " \\begin{document} ";  
+              $currentstring = '\begin{document}';  
 	    } 
 	   return $currentstring;
 	}
@@ -280,20 +369,20 @@ sub end_output {
             if ($target eq 'web') {
               $currentstring = $token->[2];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\end{document}";  
+              $currentstring = '\end{document}';  
 	    } 
 	   return $currentstring;
 	}
-#------------------------------------------------------------------------ <center> tag
+#-- <center> tag
         sub start_center {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
               $currentstring = $token->[4];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\begin{center} ";  
+              $currentstring = '\begin{center}';  
 	    }  elsif ($target eq 'latexsource') {
-              $currentstring = " \\begin{center} ";  
+              $currentstring = '\begin{center}';  
 	    } 
 	   return $currentstring;
 	}
@@ -303,22 +392,22 @@ sub end_output {
             if ($target eq 'web') {
               $currentstring = $token->[2];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\end{center}";  
+              $currentstring = '\end{center}';  
 	    }  elsif ($target eq 'latexsource') {
-              $currentstring = " \\end{center}";  
+              $currentstring = '\end{center}';  
 	    } 
 	   return $currentstring;
 	}
-#----------------------------------------------------------------------------- <b> tag
+#-- <b> tag
         sub start_b {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
               $currentstring = $token->[4];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\textbf{";  
+              $currentstring = '\textbf{';  
 	    }  elsif ($target eq 'latexsource') {
-              $currentstring = " \\textbf{";  
+              $currentstring = '\textbf{';  
 	    } 
 	   return $currentstring;
 	}
@@ -328,22 +417,23 @@ sub end_output {
             if ($target eq 'web') {
               $currentstring = $token->[2];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = "}";  
+              $currentstring = '}';  
+
 	    } elsif ($target eq 'latexsource') {
-              $currentstring = "}";  
+              $currentstring = '}';  
 	    } 
 	   return $currentstring;
 	}
-#------------------------------------------------------------------------ <strong> tag
+#-- <strong> tag
         sub start_strong {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
               $currentstring = $token->[4];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = " \\textbf{";  
+              $currentstring = '\textbf{';  
 	    } elsif ($target eq 'latexsource') {
-              $currentstring = " \\textbf{";  
+              $currentstring = '\textbf{';  
 	    } 
 	   return $currentstring;
 	}
@@ -354,20 +444,20 @@ sub end_output {
 
               $currentstring = $token->[2];     
 	    } elsif ($target eq 'tex') {
-              $currentstring = "}";  
+              $currentstring = '}';  
 	    }  elsif ($target eq 'latexsource') {
-              $currentstring = "}";  
+              $currentstring = '}';  
 	    } 
 	   return $currentstring;
 	}
-#---------------------------------------------------------------------------- <h1> tag
+#-- <h1> tag
         sub start_h1 {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "\\chapter{ ";
+		$currentstring .= '\large{\textbf{';
 	    } elsif ($target eq 'meta') {
 		$currentstring='<subject>';
                 &start_output();
@@ -380,21 +470,21 @@ sub end_output {
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "}";
+		$currentstring .= '}}';
 	    } elsif ($target eq 'meta') {
                 &end_output();
 		$currentstring='</subject>';
             } 
            return $currentstring;
 	}
-#---------------------------------------------------------------------------- <h2> tag
+#-- <h2> tag
         sub start_h2 {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "\\section{ ";
+		$currentstring .= '\large{\textbf{';
 	    } 
            return $currentstring;
 	}
@@ -404,18 +494,18 @@ sub end_output {
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "}";
+		$currentstring .= '}}';
 	    } 
            return $currentstring;
 	}
-#---------------------------------------------------------------------------- <h3> tag
+#-- <h3> tag
         sub start_h3 {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "\\subsection{ ";
+		$currentstring .= '\large{\textbf{';
 	    } 
            return $currentstring;
 	}
@@ -425,18 +515,18 @@ sub end_output {
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "}";
+		$currentstring .= '}}';
 	    } 
            return $currentstring;
 	}
-#---------------------------------------------------------------------------- <h4> tag
+#-- <h4> tag
         sub start_h4 {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "\\subsubsection{ ";
+		$currentstring .= '\large{\textbf';
 	    } 
            return $currentstring;
 	}
@@ -446,18 +536,18 @@ sub end_output {
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "}";
+		$currentstring .= '}}';
 	    } 
            return $currentstring;
 	}
-#---------------------------------------------------------------------------- <h5> tag
+#-- <h5> tag
         sub start_h5 {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "\\paragraph{ ";
+		$currentstring .= '\large{\textbf{';
 	    } 
            return $currentstring;
 	}
@@ -467,18 +557,18 @@ sub end_output {
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "}";
+		$currentstring .= '}}';
 	    } 
            return $currentstring;
 	}
-#---------------------------------------------------------------------------- <h6> tag
+#-- <h6> tag
         sub start_h6 {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "\\subparagraph{ ";
+		$currentstring .= '\large{\textbf{';
 	    } 
            return $currentstring;
 	}
@@ -488,11 +578,11 @@ sub end_output {
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "}";
+		$currentstring .= '}}';
 	    } 
            return $currentstring;
 	}
-#-------------------------------------------------------------------------- <cite> tag
+#--- <cite> tag
         sub start_cite {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -517,16 +607,16 @@ sub end_output {
 	    } 
            return $currentstring;
 	}
-#----------------------------------------------------------------------------- <i> tag
+#-- <i> tag
         sub start_i {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "\\textit{";
+		$currentstring .= '\textit{';
 	    }  elsif ($target eq 'latexsource') {
-		$currentstring .= "\\textit{";
+		$currentstring .= '\textit{';
 	    } 
            return $currentstring;
 	}
@@ -536,13 +626,13 @@ sub end_output {
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "}";
+		$currentstring .= '}';
 	    } elsif ($target eq 'latexsource') {
-		$currentstring .= "}";
+		$currentstring .= '}';
 	    } 
            return $currentstring;
 	}
-#----------------------------------------------------------------------- <address> tag
+#-- <address> tag
         sub start_address {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -567,7 +657,7 @@ sub end_output {
 	    }
            return $currentstring;
 	}
-#--------------------------------------------------------------------------- <dfn> tag
+#-- <dfn> tag
         sub start_dfn {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -592,16 +682,16 @@ sub end_output {
 	    } 
            return $currentstring;
 	}
-#---------------------------------------------------------------------------- <tt> tag
+#-- <tt> tag
         sub start_tt {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "\\texttt{";
+		$currentstring .= '\texttt{';
 	    } elsif ($target eq 'latexsource') {
-		$currentstring .= "\\texttt{";
+		$currentstring .= '\texttt{';
 	    } 
            return $currentstring;
 	}
@@ -611,13 +701,13 @@ sub end_output {
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "}";
+		$currentstring .= '}';
 	    } elsif ($target eq 'latexsource') {
-		$currentstring .= "}";
+		$currentstring .= '}';
 	    }
            return $currentstring;
 	}
-#---------------------------------------------------------------------------- <kbd> tag
+#-- <kbd> tag
         sub start_kbd {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -642,14 +732,14 @@ sub end_output {
 	    } 
            return $currentstring;
 	}
-#-------------------------------------------------------------------------- <code> tag
+#-- <code> tag
         sub start_code {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "{ \\tt ";
+		$currentstring .= '\texttt{';
 	    } 
            return $currentstring;
 	}
@@ -659,20 +749,20 @@ sub end_output {
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "}";
+		$currentstring .= '}';
 	    } 
            return $currentstring;
 	}
-#---------------------------------------------------------------------------- <em> tag
+#-- <em> tag
         sub start_em {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "\\emph{";
+		$currentstring .= '\emph{';
 	    } elsif ($target eq 'latexsource') {
-		$currentstring .= "\\emph{";
+		$currentstring .= '\emph{';
 	    } 
            return $currentstring;
 	}
@@ -682,13 +772,13 @@ sub end_output {
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "}";
+		$currentstring .= '}';
 	    } elsif ($target eq 'latexsource') {
-		$currentstring .= "}";
+		$currentstring .= '}';
 	    }  
            return $currentstring;
 	}
-#----------------------------------------------------------------------------- <q> tag
+#-- <q> tag
         sub start_q {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -713,16 +803,16 @@ sub end_output {
 	    }  
            return $currentstring;
 	}
-#----------------------------------------------------------------------------- <p> tag
+#-- <p> tag
         sub start_p {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "{\\par ";
+		$currentstring .= '{\par ';
 	    } elsif ($target eq 'latexsource') {
-		$currentstring .= "{\\par ";
+		$currentstring .= '{\par ';
 	    } 
            return $currentstring;
 	}
@@ -732,22 +822,22 @@ sub end_output {
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
 	    } elsif ($target eq 'tex') {
-	        $currentstring .= "}";
+	        $currentstring .= '}';
             } elsif ($target eq 'latexsource') {
-	        $currentstring .= "}";
+	        $currentstring .= '}';
             }
            return $currentstring;
 	}
-#---------------------------------------------------------------------------- <br> tag
+#-- <br> tag
         sub start_br {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "\\\\";
+		$currentstring .= '\\';
 	    } elsif ($target eq 'latexsource') {
-		$currentstring .= "\\\\";
+		$currentstring .= '\\';
 	    } 
            return $currentstring;
 	}
@@ -759,16 +849,16 @@ sub end_output {
 	    }
            return $currentstring;
 	}
-#--------------------------------------------------------------------------- <big> tag
+#-- <big> tag
         sub start_big {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "{\\large ";
+		$currentstring .= '\large{';
 	    } elsif ($target eq 'latexsource') {
-		$currentstring .= "{\\large ";
+		$currentstring .= '\large{';
 	    }  
            return $currentstring;
 	}
@@ -778,22 +868,22 @@ sub end_output {
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
 	    } elsif ($target eq 'tex') {
-	        $currentstring .= " }";
+	        $currentstring .= '}';
             } elsif ($target eq 'latexsource') {
-	        $currentstring .= " }";
+	        $currentstring .= '}';
             }
            return $currentstring;
 	}
-#------------------------------------------------------------------------- <small> tag
+#-- <small> tag
         sub start_small {
 	    my ($target,$token) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[4];
 	    } elsif ($target eq 'tex') {
-		$currentstring .= "{\\footnotesize ";
+		$currentstring .= '\footnotesize{';
 	    } elsif ($target eq 'latexsource') {
-		$currentstring .= "{\\footnotesize ";
+		$currentstring .= '\footnotesize{';
 	    } 
            return $currentstring;
 	}
@@ -803,13 +893,13 @@ sub end_output {
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
 	    } elsif ($target eq 'tex') {
-	        $currentstring .= " }";
+	        $currentstring .= '}';
             } elsif ($target eq 'latexsource') {
-	        $currentstring .= " }";
+	        $currentstring .= '}';
             }
            return $currentstring;
 	}
-#---------------------------------------------------------------------- <basefont> tag
+#-- <basefont> tag
       sub start_basefont {
 	my ($target,$token) = @_;
 	my $currentstring = '';
@@ -826,7 +916,7 @@ sub end_output {
 	} 
 	return $currentstring;
       }
-#-------------------------------------------------------------------------- <font> tag
+#-- <font> tag
          sub start_font {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -843,7 +933,7 @@ sub end_output {
             } 
 	   return $currentstring;
 	} 
-#------------------------------------------------------------------------ <strike> tag
+#-- <strike> tag
         sub start_strike {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -864,7 +954,7 @@ sub end_output {
             }
            return $currentstring;
 	}
-#----------------------------------------------------------------------------- <s> tag
+#-- <s> tag
         sub start_s {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -885,7 +975,7 @@ sub end_output {
             }
            return $currentstring;
 	}
-#--------------------------------------------------------------------------- <sub> tag
+#-- <sub> tag
         sub start_sub {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -906,7 +996,7 @@ sub end_output {
             }
            return $currentstring;
 	}
-#--------------------------------------------------------------------------- <sup> tag
+#-- <sup> tag
         sub start_sup {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -927,7 +1017,7 @@ sub end_output {
             }
            return $currentstring;
 	}
-#---------------------------------------------------------------------------- <hr> tag
+#-- <hr> tag
         sub start_hr {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -947,7 +1037,7 @@ sub end_output {
 	    } 
            return $currentstring;
 	}
-#----------------------------------------------------------------------------- <a> tag
+#-- <a> tag
         sub start_a {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -958,7 +1048,7 @@ sub end_output {
            return $currentstring;
 	}
         sub end_a {
-	    my ($target,$token,$stackref) = @_;
+	    my ($target,$token,$tagstack,$stackref) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
 	       $currentstring .= $token->[2];
@@ -974,9 +1064,9 @@ sub end_output {
             }
            return $currentstring;
 	}
-#---------------------------------------------------------------------------- <li> tag
+#-- <li> tag
         sub start_li {
-	    my ($target,$token,$stackref) = @_;
+	    my ($target,$token,$tagstack,$stackref) = @_;
             my $currentstring = '';
             if ($target eq 'web') {
               $currentstring = $token->[4];     
@@ -1004,7 +1094,7 @@ sub end_output {
 	    } 
 	   return $currentstring;
 	}
-#----------------------------------------------------------------------------- <u> tag
+#-- <u> tag
         sub start_u {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -1025,7 +1115,7 @@ sub end_output {
             }
            return $currentstring;
 	}
-#---------------------------------------------------------------------------- <ul> tag
+#-- <ul> tag
         sub start_ul {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -1046,7 +1136,7 @@ sub end_output {
 	    } 
 	   return $currentstring;
 	}
-#-------------------------------------------------------------------------- <menu> tag
+#-- <menu> tag
         sub start_menu {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -1067,7 +1157,7 @@ sub end_output {
 	    } 
 	   return $currentstring;
 	}
-#--------------------------------------------------------------------------- <dir> tag
+#-- <dir> tag
         sub start_dir {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -1088,7 +1178,7 @@ sub end_output {
 	    } 
 	   return $currentstring;
 	}
-#---------------------------------------------------------------------------- <ol> tag
+#-- <ol> tag
         sub start_ol {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -1109,7 +1199,7 @@ sub end_output {
 	    } 
 	   return $currentstring;
 	}
-#---------------------------------------------------------------------------- <dl> tag
+#-- <dl> tag
         sub start_dl {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -1130,7 +1220,7 @@ sub end_output {
 	    } 
 	   return $currentstring;
 	}
-#---------------------------------------------------------------------------- <dt> tag
+#-- <dt> tag
         sub start_dt {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -1151,7 +1241,7 @@ sub end_output {
 	    } 
 	   return $currentstring;
 	}
-#---------------------------------------------------------------------------- <dd> tag
+#-- <dd> tag
         sub start_dd {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -1168,7 +1258,7 @@ sub end_output {
             } 
 	   return $currentstring;
 	}
-#------------------------------------------------------------------------- <table> tag
+#-- <table> tag
         sub start_table {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -1189,7 +1279,7 @@ sub end_output {
 	    } 
 	   return $currentstring;
 	}
-#------------------------------------------------------------------------- <tr> tag
+#-- <tr> tag
         sub start_tr {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -1210,7 +1300,7 @@ sub end_output {
 	    } 
 	   return $currentstring;
 	}
-#------------------------------------------------------------------------- <td> tag
+#-- <td> tag
         sub start_td {
 	    my ($target,$token) = @_;
             my $currentstring = '';
@@ -1231,7 +1321,7 @@ sub end_output {
 	    } 
 	   return $currentstring;
 	}
-# -------------------------------------------------------------------------- <img> tag
+#-- <img> tag
 
         sub start_img {
 	    my ($target,$token) = @_;
@@ -1255,7 +1345,7 @@ sub end_output {
 	    } 
 	   return $currentstring;
 	}
-# ----------------------------------------------------------------------- <applet> tag
+#-- <applet> tag
 
         sub start_applet {
 	    my ($target,$token) = @_;
@@ -1282,7 +1372,7 @@ sub end_output {
 	   return $currentstring;
 	}
 
-# ------------------------------------------------------------------------ <embed> tag
+#-- <embed> tag
 
         sub start_embed {
 	    my ($target,$token) = @_;
@@ -1307,7 +1397,7 @@ sub end_output {
 	   return $currentstring;
 	}
 
-# ------------------------------------------------------------------------ <param> tag
+#-- <param> tag
 
         sub start_param {
 	    my ($target,$token) = @_;
@@ -1336,7 +1426,7 @@ sub end_output {
 	   return $currentstring;
 	}
 
-# ------------------------------------------------------------------------ <allow> tag
+#-- <allow> tag
 
         sub start_allow {
 	    my ($target,$token) = @_;
@@ -1349,7 +1439,25 @@ sub end_output {
         sub end_allow {
 	   return '';
 	}
-
-
+#-- Frames
+	sub start_frameset {
+	  my ($target,$token) = @_;
+	  my $currentstring = '';
+	  if ($target eq 'web') { 
+	    if (!$Apache::lonxml::registered) {
+	      $currentstring.='<head>'.&Apache::lonxml::registerurl().'</head>';
+	    }
+	    $currentstring .= $token->[4];
+	  }
+	  return $currentstring;
+	}
+        sub end_frameset {
+	  my ($target,$token) = @_;
+	  my $currentstring = '';
+	  if ($target eq 'web') {
+	    $currentstring = $token->[2];
+	  }
+	  return $currentstring;
+	}
 1;
 __END__