--- loncom/interface/lonhtmlcommon.pm	2004/06/02 16:41:46	1.71
+++ loncom/interface/lonhtmlcommon.pm	2004/06/05 14:46:12	1.75
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common html routines
 #
-# $Id: lonhtmlcommon.pm,v 1.71 2004/06/02 16:41:46 www Exp $
+# $Id: lonhtmlcommon.pm,v 1.75 2004/06/05 14:46:12 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -875,27 +875,62 @@ sub htmlareaheaders {
     }
     return (<<ENDHEADERS);
 <script type="text/javascript">
-    _editor_url="/htmlarea/";
-</script>
-<script type="text/javascript" src="/htmlarea/htmlarea.js"></script>
-<style type="text/javascript">
 _editor_url='/htmlarea/';
 _editor_lang='$lang';
-</style>
+</script>
+<script type="text/javascript" src="/htmlarea/htmlarea.js"></script>
 ENDHEADERS
 }
 
+# ------------------------------------------------- Activate additional buttons
+
+sub htmlareaaddbuttons {
+    if (&htmlareablocked()) { return ''; }
+    return (<<ENDADDBUTTON);
+    var config=new HTMLArea.Config();
+    config.registerButton('ed_math','LaTeX Inline',
+			  '/htmlarea/images/ed_math.gif',false,
+			    function(editor,id) {
+			      editor.surroundHTML('<m>\$','\$</m>');
+			    }
+			  );
+    config.registerButton('ed_math_eqn','LaTeX Equation',
+			  '/htmlarea/images/ed_math_eqn.gif',false,
+			    function(editor,id) {
+			      editor.surroundHTML(
+				     '<center><m>\\\\[','\\\\]</m></center>');
+			    }
+			  );
+    config.toolbar.push(['ed_math','ed_math_eqn']);
+ENDADDBUTTON
+}
 # ---------------------------------------------------------- Script to activate
 
 sub htmlareaactive {
     if (&htmlareablocked()) { return ''; }
+    my $addbuttons=&htmlareaaddbuttons();
     return (<<ENDSCRIPT);
 <script type="text/javascript" defer="1">
-    HTMLArea.replaceAll();
+    $addbuttons
+    HTMLArea.replaceAll(config);
 </script>
 ENDSCRIPT
 }
 
+# ----------------------------------------- Script to activate only some fields
+
+sub htmlareaselectactive {
+    my @fields=@_;
+    if (&htmlareablocked()) { return ''; }
+    my $output='<script type="text/javascript" defer="1">'.
+	&htmlareaaddbuttons();
+    foreach(@fields) {
+	$output.="\nHTMLArea.replace('$_',config);";
+    }
+    $output.="\nwindow.status='Activated Editfields';\n</script>";
+    return $output;
+}
+
 # --------------------------------------------------------------------- Blocked
 
 sub htmlareablocked {