Satusbar text

I've got a script I've inserted int a few sites using an invisible iframe, it works fine but today I found a problem. The iframe loads a page with a message (to make peope think there's nothing going on) and another invisible iframe which contains a form and then submits it (yeah i know i'm probably going overboard with invisible iframes).

That all works but in the browser status bar is shows they it is loading from that website, I need a way to disable that. Or a way for it to stop it from loading after the form has been submitted.

Any ideas?