Yep, you're right! "The concept behind the XMLHttpRequest object was originally created by the developers of Outlook Web Access (by Microsoft) for Microsoft Ex

Yep, you're right! "The concept behind the XMLHttpRequest object was originally created by the developers of Outlook Web Access (by Microsoft) for Microsoft Exchange Server 2000." - http://en.wikipedia.org/wiki/XMLHttpRequest http://en.wikipedia.org/wiki/XMLHttpRequest