javascript iframe flickering

[nleco]

i have a page with a main image and thumbnails underneath it. this is on the left side of the page (in side a floated div). on the right side, i have an iframe with an ad (inside a floated div). this iframe gets introduced via a script src="blahblah" tag.

i noticed that on Firefox, whenever i do any type of javascript related action (like clicking ont he thumbnails to replace the main image)... the ad on the right flickers over the main image on the left for a brief second.

it's a bit annoying. has anyone ever had a problem like this? or any lead? i know it's hard to solve this without any source code.

[PeejAvery]

i know it's hard to solve this without any source code.
So post the source code.

Here is the deal, working with floating divs and spans are hard to work with. You must take into account the browser in which the person is viewing the item. If the browser works with layers such as Netscape bases, you will have a harder time getting the div/span to move.

The flickering is due to some form of updating. Whether that is minor movement or just a page reload, that could be the case. Page reloads and page activity are two things know to affect div and span tags.