YUI and Atlas

Just my opinion... If you are happy with what you have with YUI - you will find it extremely frustrating combining YUI with Ajax... while they state they do not want to limt the use of additional Ajax 'libraries' the truth of the matter is that it actually is one or the other due to how the script manager works... It's probably possible don't get me wrong... but I have found simply too many issues even just trying to incorporate native javascript in a fashion that the Script Manager doesn't just balk at it but kills the IIS process when its all said and done...None of the Microsoft Ajax (in my opinion) is being tested and used in multiple scenarios as such and something as simple as wrapping a YUI function within a form with say a Update Panel - will cause you to waste undue hours of trying to figure whats being done where...

Thanks for the response, jodywbcb.

Turns out I just hadn't done enough research yet! Looks like the Ajax Control Toolkit has a lot of what I need. It's located here: http://ajax.asp.net/ajaxtoolkit

Looking foward to getting my hands dirty with this.