dynamic web content - auto-disable button on click

I wonder which language could I use to make button in form "disabled" after being clicked and the page is still loading. Like in phpBB when you hit LOGIN button, you have to wait till the page loads and you can't hit it once more.

GOOGLEd a bit, but found nothing useful bout this. Searched for disable elements function in VB, but also found nothing.

I'm not in a hurry with this, just need some suggestions as I am just planning new script behaviour for some pages.

use javascript: onRelease(this.button.available = false) or something I guess :)

if someone uses the keyboard that will work frag? or does it have to be something like onkeyup?

Don't know, javascript was a looong time ago for me.. Try googling a bit ;)