My web page includes a frame that displays a banner ad from a third-party suppiler. The actual image is determined randomly. We are facing an inconsistent problem where the image is not getting displayed and all that is seen is the frame's border. A mouseover behaves exactly the same whether or not the image is displayed. Clicking in the frame also behaves the same in both cases.
My need is to simply determine if the ad is displayed or not. Since the image is random I cannot use a bitmap checkpoint as there is nothing to compare it to.