--- loncom/lonenc.pm	2006/12/27 17:11:08	1.20
+++ loncom/lonenc.pm	2007/10/05 18:33:29	1.22
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # URL translation for encrypted filenames
 #
-# $Id: lonenc.pm,v 1.20 2006/12/27 17:11:08 albertel Exp $
+# $Id: lonenc.pm,v 1.22 2007/10/05 18:33:29 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -56,7 +56,7 @@ sub encryptseed {
         $seed=substr($seed.$seed,0,32);
         return pack("H32",$seed);
     } else {
-        return;
+        return pack("H32",1);
     }
 }
 
@@ -151,7 +151,8 @@ sub encrypt_ref {
     my $html;
     if ($force_enc || $env{'request.enc'}) {
 	while (my ($name,$value)= each(%{ $elements })) {
-	    if (!$value) { next; }
+	    next if (!$value); 
+	    next if ($value =~ /^\w+:/); # explict javascript: or http: link
 	    my $href=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$value);
 	    if ($href !~ /^http:/) {
 		# IE really wants an extension