I use nested tabbar and in IE7 it works fine. But in IE6, there is a problem with iFrames. It seams, that iframes are always disabled. So I can’t see the tabs of the nested tabbar. Or is something wrong with the code?
The problem is in tabbar2.enableAutoSize(true,true); This mode works well , when you are using static content inside the tabbar, but it will not work correctly for iframes, and cause problems in IE6. Commenting this line will resolve issue.