Is Readystate_loaded Across Browsers?

I have been using valums file uploader for a long time: https://github.com/valums/file-uploader One problem I've had is that it never really hits 100% onProgress. Once the file is

Solution 1:

From Quirksmode:

Explorer has a point in so far as the load event can be seen as a subset of the readystatechange event. load fires when the page has been loaded completely, which is equivalent to saying the readyState is 4: completed.

...

[However, E]xplorer doesn't support the load event on xmlhttprequests. We already knew this, but we should realize it doesn't even allow you to set the event handler, since it allows only a very limited set of properties on the xmlhttp object.

The event object is still missing in Opera, though not in Mozilla.

http://www.quirksmode.org/blog/archives/2005/09/xmlhttp_notes_r_2.html