Dojo Framework

That's it, I've got to say it out load...
I HATE CLIENT SCRIPTING!!!
And because of it, I'm in a constant search for utilities\libraries\work-arounds\framework basically - anything that will help me with it.

Dojo is a JavaScript toolkit that offers a full set of (client-side) controls and utilities.
Just a small warning before I continue - Dojo has nothing to do with .Net or any other server-side language\technology - it's simply put a client side framework.

What Does It Do?
Dojo offers a set of controls called widgets, a rich event system that supports more complex use (i.e overridden events), validation support (i.e: simple declare dojo.widget.validate.UsZipTextbox), call-back manipulation support (i.e hidding it using XMLHttpRequest) And much more.

The Dojo framework is very rich, but it still encourage you to write client-side code - although it's not the ugly standard jscript ui games, but still - client scripts are client scripts...

Oh well - keep on looking...