[thelist] Javascript for/in

[Tab Alleman]

Why won't this bit of JavaScript cause all the checkboxes in 'MainTableForm'
to be checked when run?  I've tried every variation of the script below that
I can think of.  I can do it with a regular for loop, but I want the for/in
loop to work like it's supposed to.

for (checkbox in document.forms['MainTableForm'])
			{
			document.forms['MainTableForm'].elements[checkbox].checked=true;
			}