Javascript Ads Shift When Scrolling in FireFox

Hello, I have problem with Google Adsense (and any javascript based ad) slightly shifting when scrolling up or down in FireFox. It doesn't do this in Internet Explorer 7. Is there anyway I can prevent this?

You can see what I mean here: http://gtaiv.cc/Store/ - The ad is at the bottom.

Any help is appreciated.

Thanks.

 

nice layout but your page is full with large pics and it makes it impossible to scroll down..

 

what do you mean? i have no problem scrolling in firefox and ie7. i just cant get adsense to stop shifting in firefox.

 

Let me try again, I had difficulties to scroll the entire page with my ff3 browser

 

what is stop shifting?

 

the advertisement does not stay in one place, it moves when you scroll the page.

this is basically what happens:

 

I just saw, I advice you to go to w3schools at the css section and check for css advanced-positioning. You can have some tricks there cause i do not remember well. Maybe i will check for you later.

 

Thanks, I've figured out what's causing it. It has to do with the fixed background. When I change the background to scroll, it solves the problem. Now I just need to figure out how to have a fixed background without it affecting the ads.