I am trying to run a standard flash banner ad (300x250), delivered by a commercial ad server, in the right sidebar of my site http://www.OldSaybrookNow.com (Shoreline East Train ad). Problem I am having is the ad won't format properly in sidebar (smaller than supposed to be). But if I place it in the body (see example on right side of website) it formats and runs perfectly. Weird thing is, other Flash ads (eg those served by GoogleAds etc) work fine.
Any help in where to start looking would be much appreciated.