YUI Modal Dialog in IE7 Quirks Mode

Question

I have a page in Quirks mode (no DOCTYPE). I'm trying to show a YUI modal dialog. And it shows correctly under Chrome & FF. But in IE7, when the dialog pops up, the font size of all the other elements on page becomes smaller. And it remains like that, even after I dismiss the dialog.

This isn't a problem for IE7 in Standards mode. But if I force Standards, the rendering of all the elements on the page gets messed up. And I really want to avoid that.

How else can I solve this?

Thanks!