UI Tabs and Facebox

Hi,
I am using Facebox to load a web page (jQuery.facebox({ ajax:
'GetAd.aspx?adnumber='+adnumber });)
and on GetAd.aspx im using UI Tabs to display various ad details.
However the seems to be some sort of conflict between them. If i put
them together, facebox will display, the page loads with the tabs
displaying correctly, but theres no tab functionality at all. Firebug
dosent show any js errors so im a bit lost on how to debug it.
If i run GetAd.aspx on its on, the tabs will work fine. I should also
point out that it does work in IE, but not Firefox?
Has anybody else had any problems combining these plugins?
Russ.