Problem with dynamic Ajaxtab

hi,
I have generated a Ajax tab container  dynamically.
It takes the input as xml file which contains usercontrols names , and their paths.Suppose if i give 5 usercontrols in xml file,5 tabs are generated,each tab for one usercontrols.
here I have a Problem like Every time all controls are Loaded it takes lots of time to load bcz every tab contains minimum 50 to 80 controls.

Can any one help me how to stop loading all every time.....?.