base ref causing problem with current version of UI for tabs

base ref causing problem with current version of UI for tabs

I have previously used jquery UI on two websites without issue.
 
On the latest use of the customised download, the tabs were not working.  I have finally boiled the issue down to the base href statement in my <head> section.
 
Once removed, then the tabs work OK.
 
However, this is required acorss the site for it to work.
 
Is there a work around?
 
Mark