I have a dialog that I create to float over an IFRAME, but below a 'suckerfish' menu system.  When the dialog displays in IE6, the dialog, along with the text above the IFRAME, are moved up so as to show only part of the dialog, and none of the content of the IFRAME.

 

This behavior does not happen if I use IE8.

 

Are there any known issues with jQuery.dialog(), IFRAMES, and IE6?