--- loncom/interface/lonhtmlcommon.pm	2004/08/17 19:02:57	1.87
+++ loncom/interface/lonhtmlcommon.pm	2004/10/05 20:35:02	1.91
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common html routines
 #
-# $Id: lonhtmlcommon.pm,v 1.87 2004/08/17 19:02:57 albertel Exp $
+# $Id: lonhtmlcommon.pm,v 1.91 2004/10/05 20:35:02 albertel 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;
+}
+
 
 ##############################################
 ##############################################
@@ -777,8 +804,10 @@ sub Increment_PrgWin {
     my $sec = $time_est % 60;
     # 
     my $str;
-    if ($min == 1 && $sec > 1) {
+    if ($min == 0 && $sec > 1) {
         $str = '[_2] seconds';
+    } elsif ($min == 1 && $sec > 1) {
+        $str = '1 minute [_2] seconds';
     } elsif ($min == 1 && $sec < 2) {
         $str = '1 minute';
     } elsif ($min < 10 && $sec > 1) {
@@ -926,14 +955,14 @@ 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']);