How to unregister an event handler in Internet Explorer 6?

Question

I am registering a function with the onload method of a html form, I need to unregister this event hander function on unload of the form. How do I do it in Internet Explorer 6?

Answer 1

Use detachEvent

Reference

Answer 2

if you have added the onload in your HTML or via JavaScript

<form onload="blah()">

or

myForm.onload = blah;

then

myForm.onload = null;

should do it
if you've used attachEvent

myForm.attachEvent( 'onload', blah );

use

myForm.detachEvent( 'onload', blah );

EDIT
I'm not sure forms have onload events tho, are you sure?