? externalcss.patch
Index: wysiwyg.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/wysiwyg/wysiwyg.module,v
retrieving revision 1.51
diff -u -p -r1.51 wysiwyg.module
--- wysiwyg.module	6 Jan 2011 01:43:26 -0000	1.51
+++ wysiwyg.module	4 Feb 2011 04:45:06 -0000
@@ -578,7 +578,10 @@ function wysiwyg_get_css() {
   $files = array();
   foreach (drupal_add_css() as $filepath => $info) {
     if ($info['group'] >= CSS_THEME && $info['media'] != 'print') {
-      if (file_exists($filepath)) {
+      if ($info['type'] == 'external') {
+        $files[] = $filepath;
+      }
+      elseif (file_exists($filepath)) {
         $files[] = base_path() . $filepath;
       }
     }