Selection - On Mouse Click - Banners Change Images

I have made one banner that changes its images turn by turn with settimefunction(). I have used div and z-index to keep the layers up and down. I want only whenever any visitor clicks on the tab of the specified category because images and lower tabs are changing same time, it should stop the movement of that particular image. I am fighting more than 3 days.

Following is the html code of this banner

Code:

And then here is the style code that deals with DIV's of this html.

Code:

And the last i am putting the javascript function that runs these images turn by turn. I am calling this function on body load. i did one experiment i called this function from tabs by sending variable i value but after 2 or 3 clicks it got the speed greater and greater.

Code:

You can visit this [url] where you can easily look at the images of that are changing turn by turn with tab(s) that are also changing turn by turn.