I am trying to create a sig like on Danasoft. One of the things the script should show, is which browser the one that is watching the sig is using. I am playing around a bit, and I found out that my IE6 has this HTTP_USER_AGENT signature: Code: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322) Why Mozilla? Is IE using pieces of Mozilla code? Or is IE in fact Mozilla?