I want to use a click-once javascript code on uploadcrazy.com (http://www.uploadcrazy.com)
It already have a javascript code for popup, I tried many different codes already, is it impossible to use 2 javascript codes for the same form button?

Not sure this is what your looking for:

http://www.allwebco-templates.com/support/S_add_pop.htm

-Scott

Sorry. I mean the site already have a javascript code that will open a popup when someone clicks the button, I want to be able to make it so the button will be disabled after the first click.