How to prevent a dropdown ad from covering the web page?

javascript ads drop down and block website content

[David_M]

I use a large click based advertising agency to provide ads on my site. The problem is that some of the ads, use macromedia flash drop downs and cover a large part of the page for several seconds. The ad is javascript loaded.
if (ValueLoaded) ValueShowAd();

Any way to test if its a dropdown and not load it?

[tedster]

David_M,

I would also be aggrivated if I set aside part of my page for an ad and some company grabbed extra space. But I'm not very familiar with the Flash coding that makes the ad escape its boundaries.

Can you catch one in the act and View Source to see if there are any characteristics you can test for?

[DrDoc]

Would an iframe prevent it?