--- loncom/interface/lonhtmlcommon.pm	2004/08/05 16:59:29	1.86
+++ loncom/interface/lonhtmlcommon.pm	2004/09/29 14:50:43	1.90
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common html routines
 #
-# $Id: lonhtmlcommon.pm,v 1.86 2004/08/05 16:59:29 albertel Exp $
+# $Id: lonhtmlcommon.pm,v 1.90 2004/09/29 14:50:43 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -117,6 +117,12 @@ sub store_recent {
 				 time.'&'.&Apache::lonnet::escape($value) });
 }
 
+sub remove_recent {
+    my ($area,$names)=@_;
+    my $file=&recent_filename($area);
+    return &Apache::lonnet::del($file,$names);
+}
+
 sub select_recent {
     my ($area,$fieldname,$event)=@_;
     my %recent=&Apache::lonnet::dump(&recent_filename($area));
@@ -519,6 +525,27 @@ sub javascript_nothing {
     return $nothing;
 }
 
+##############################################
+##############################################
+sub javascript_docopen {
+    # safari does not understand document.open() and loads "text/html"
+    my $nothing = "''";
+    my $user_browser;
+    my $user_os;
+    $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
+    $user_os      = $ENV{'browser.os'}   if (exists($ENV{'browser.os'}));
+    if (! defined($user_browser) || ! defined($user_os)) {
+        (undef,$user_browser,undef,undef,undef,$user_os) = 
+                           &Apache::loncommon::decode_user_agent();
+    }
+    if ($user_browser eq 'safari' && $user_os =~ 'mac') {
+        $nothing = "document.clear()";
+    } else {
+	$nothing = "document.open('text/html','replace')";
+    }
+    return $nothing;
+}
+
 
 ##############################################
 ##############################################
@@ -926,14 +953,14 @@ sub htmlareaaddbuttons {
     config.registerButton('ed_math','LaTeX Inline',
 			  '/htmlarea/images/ed_math.gif',false,
 			    function(editor,id) {
-			      editor.surroundHTML('<m>\$','\$</m>');
+			      editor.surroundHTML('&nbsp;<m>\$','\$</m>&nbsp;');
 			    }
 			  );
     config.registerButton('ed_math_eqn','LaTeX Equation',
 			  '/htmlarea/images/ed_math_eqn.gif',false,
 			    function(editor,id) {
 			      editor.surroundHTML(
-				     '<center><m>\\\\[','\\\\]</m></center>');
+				     '&nbsp;\\n<center><m>\\\\[','\\\\]</m></center>\\n&nbsp;');
 			    }
 			  );
     config.toolbar.push(['ed_math','ed_math_eqn']);
@@ -1034,8 +1061,8 @@ returns: nothing
     my @Crumbs;
     
     sub breadcrumbs {
-        my ($color,$component,$component_help,$function,$domain,$menulink) =
-	    @_;
+        my ($color,$component,$component_help,$function,$domain,$menulink,
+	    $helplink) = @_;
         if (! defined($color)) {
             if (! defined($function)) {
                 $function = &Apache::loncommon::get_users_function();
@@ -1097,7 +1124,9 @@ returns: nothing
 #        if ($bug ne '') {
 #            $icons .= &Apache::loncommon::help_open_bug($bug);
 #        }
-        $icons .= &Apache::loncommon::help_open_menu($color,$component,$component_help,$function,$faq,$bug);
+	if ($helplink ne 'nohelp') {
+	    $icons .= &Apache::loncommon::help_open_menu($color,$component,$component_help,$function,$faq,$bug);
+	}
         if ($icons ne '') {
             $Str .= $icons.'&nbsp;';
         }