Index: django/contrib/admin/templatetags/admin_modify.py
===================================================================
--- django/contrib/admin/templatetags/admin_modify.py	(revision 3104)
+++ django/contrib/admin/templatetags/admin_modify.py	(working copy)
@@ -18,7 +18,10 @@
     return '_'.join([s.lower() for s in word_re.findall(name)[:-1]])
 
 def include_admin_script(script_path):
-    return '<script type="text/javascript" src="%s%s"></script>' % (settings.ADMIN_MEDIA_PREFIX, script_path)
+    from urlparse import urljoin
+    if not re.search(r'^(?:https?://|/)', script_path):
+        script_path = urljoin(settings.ADMIN_MEDIA_PREFIX, script_path)
+    return '<script type="text/javascript" src="%s"></script>' % script_path
 include_admin_script = register.simple_tag(include_admin_script)
 
 def submit_row(context):