Fix Feedback Tab Widget so it doesn't push content down

When I include the feedback tab widget's js in my site, it breaks my site's layout. Basically, when the widget is clicked, the lightbox that opens pushes all of my site content down.

You can see that the tab displays fine:

http://skitch.com/aviflombaum/b8ybe/d...

But on click this happens:

http://skitch.com/aviflombaum/b8ybj/d...

http://skitch.com/aviflombaum/b8ybc/d...

All the content has been pushed down. I've narrowed the offending CSS on my site down to this single line:

div	{background: #FFF;}

If I remove that, the widget works perfectly. However, removing that breaks some of the div's on my site. I'm wondering if you can fix the widget's CSS to make sure that it sets a transparent background to all it's divs using an ID specific / higher-level CSS selector to make sure that your rule overrides mine. Basically I think that for some reason, div's having a background color for the DOM to reserve space for those divs even though they are absolutely positioned and have transparent backgrounds.

If you could fix this or have ideas for me, I'd greatly appreciate it!