Recently active problems in PBwiki tagged with javascript

I get the greenish background that appears in Edit mode. Backgound is transparent if equation is outside a table.

i have confirmed it is not a ie browser setting as when we bypass the network security settings it works ok. Can you please let me know what sites we need to 'allow' in order to get it working fine. thanks. I would like to demonstrate this to company colleagues but am unable to at present,
The javascript error is : Object expected
the line it is refering to in the source code is:

---> InitializeAPI() ;
if ( FCKBrowserInfo.IsIE )
FCK_PreloadImages() ;
else
LoadToolbarSetup() ;

Peter