[jQuery] autocomplete not working in tabs?

Hi,
I used autocomplete plugin many times in other projects in the past.
First time I need to put in in tabs. Its not functioning right. When
clicked on a customer name, it needs to fill in the box.
Test link (second tab, type any letter):
http://www.refinethetaste.com/html/cp/default.asp?Section=orders&Process=AddOrder