Please take a loot at the following link:

As you can see I have 3 tabs
In the second tab I can Drag elements from "Available Room Class" box (left side) into "Rooms Class In Your Hotel" (right side).
But, when I do that and click on another tab, and than goes back to the second tab, the data got reset and return to the begining status (all elements in the left box)
moving between the tabs don't do LOAD to the page.

How can I fix that?

Thanks in advanced,