How can I override the OnBeforeUnload dialog and replace it with my own?

Question

I need to warn users about unsaved changes before they leave a page (a pretty common problem).

window.onbeforeunload=handler

This works bu

Answer 1

Try placing a return; instead of a message.. this is working most browsers for me. (This only really prevents dialog's presents)

window.onbeforeunload = function(evt) {            
        //Your Extra Code
        return;
}