A Difference I think I have noticed between IE and Firefox concerning XmlHttpRequest
I've noticed a difference in how Internet Explorer (versions 6 and 7) and Firefox handle synchronous XmlHttpRequests. In both browsers, you can send requests using JavaScript. However, after the synchronous send() call, Internet Explorer still triggers the onreadystatechange event, while Firefox does not. I need to research which behavior is correct and according to spec. If you happen to know, please email me!