--- loncom/interface/lonpreferences.pm	2005/07/05 15:25:34	1.66
+++ loncom/interface/lonpreferences.pm	2005/12/28 21:40:25	1.69.2.1
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Preferences
 #
-# $Id: lonpreferences.pm,v 1.66 2005/07/05 15:25:34 albertel Exp $
+# $Id: lonpreferences.pm,v 1.69.2.1 2005/12/28 21:40:25 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -188,7 +188,7 @@ sub texenginechanger {
     my $texengine=$userenv{'texengine'};
 
     my $pref=&mt('Preferred method to display Math');
-    my %mathchoices=('' => 'No Preference',
+    my %mathchoices=('' => 'Default',
 		     'tth' => 'TeX to HTML',
 		     #'ttm' => 'TeX to MathML',
 		     'jsMath' => 'jsMath',
@@ -196,25 +196,22 @@ sub texenginechanger {
                      );
     my $selectionbox=&Apache::loncommon::select_form($texengine,'texengine',
 						     %mathchoices);
-    my $mathexample='$$\int\left(\frac{a+b}{c^6*d}\right)$$';
-    my $jsMath_example=&Apache::lontexconvert::jsMath_converted(\$mathexample);
-    $mathexample='$$\int\left(\frac{a+b}{c^6*d}\right)$$';
-    my $tth_example=&Apache::lontexconvert::tth_converted(\$mathexample);
-    $mathexample='$$\int\left(\frac{a+b}{c^6*d}\right)$$';
-    my $mimetex_example=&Apache::lontexconvert::mimetex_converted(\$mathexample);
+    my $jsMath_start=&Apache::lontexconvert::jsMath_header();
     my $change=&mt('Change');
     $r->print(<<ENDLSCREEN);
+<br />
+
 <form name="server" action="/adm/preferences" method="post">
 <input type="hidden" name="action" value="verify_and_change_texengine" />
 <p>$pref: $selectionbox</p>
 <p><input type="submit" value="$change" /></p>
 </form>
 Examples:
-<p> TeX to HTML <br /> $tth_example</p>
-<script type="text/javascript">function NoFontMessage () { }</script>
-<script src="/adm/jsMath/jsMath.js"></script>
+<p> TeX to HTML <br /> 
+<iframe src="/res/adm/pages/math_example.tex?buttons=no&mode=tth" width="400" hieght="200"></iframe>
+</p>
 <p>jsMath <br /> 
-
+$jsMath_start
 <script type="text/javascript">
 if (jsMath.nofonts == 1) {
     document.writeln
@@ -231,9 +228,13 @@ if (jsMath.nofonts == 1) {
 	 +'</font></small></div></center>');
 }
 </script>
+<iframe src="/res/adm/pages/math_example.tex?buttons=no&mode=jsMath" width="400" hieght="200"></iframe>
 
-$jsMath_example</p>
-<p> Convert to Images <br /> $mimetex_example</p>
+</p>
+<p> Convert to Images <br />
+<br />
+<iframe src="/res/adm/pages/math_example.tex?buttons=no&mode=mimetex" width="400" hieght="200"></iframe>
+</p>
 ENDLSCREEN
     if ($env{'environment.texengine'} ne 'jsMath') {
 	$r->print('<script type="text/javascript">jsMath.Process()</script>');
@@ -402,7 +403,7 @@ sub verify_and_change_screenname {
         &Apache::lonnet::delenv('environment\.nickname');
         $message.='Reset nickname';
     }
-
+    &Apache::lonnet::devalidate_cache_new('namescache',$user.':'.$domain);
     $r->print(<<ENDVCSCREEN);
 $message
 ENDVCSCREEN
@@ -995,6 +996,7 @@ sub coursedisplaychanger {
     $r->print(<<ENDLSCREEN);
 <form name="server" action="/adm/preferences" method="post">
 <input type="hidden" name="action" value="verify_and_change_coursepage" />
+<br />
 <label><input type="radio" name="newdisp" value="firstres" $firstselect /> $whatsnew_off</label><br />
 <label><input type="radio" name="newdisp" value="whatsnew" $whatsnewselect /> $whatsnew_on</label>
 ENDLSCREEN