I know there are lots of these but all the pages i've seen are because they make there code all complicated and have lots of features. My code is very basic and is basically straight from the book. There nothing fancy. yet it fails? People tell me to use async on then it fails on every browser (Status = 0) when I run it with async off it works 100% fine on google chrome, but with FF it flickers the error code but still changes the width of the progress bar. IE doesen't work at all with it On Here is the code: http://pastebin.com/eGZFQvDK