image scroll java script trouble

Hi! I have a java script image scroller that I'm using on a tabbed page. Now when I open the default (first) tab the scroller works very nicely, but when I switch to the second, third or fourth tab the scroller shows the initial images, but on mouseOver it does not scroll as in the first tab.
Can someone help me understand what could be the reason and how to resolve it.
Thanks in advance!

You might get better answers if you ask this question on a javascript forum.

could you inform me about some good related forum?

I don't know anything about javascript.
Does Google work in your area?