ad=new Array(3);
ad[0]="<iframe src='http://click.dtiserv2.com/Click882/3006010-23-58717' width=120 height=90 frameborder='no' scrolling='no'></iframe>";
ad[1]="<iframe src='http://click.dtiserv2.com/Click400/3290008-23-58717' width=120 height=90 frameborder='no' scrolling='no'></iframe>";
ad[2]="<iframe src='http://click.dtiserv2.com/Click603/3292004-23-58717' width=120 height=90 frameborder='no' scrolling='no'></iframe>";
adNo = Math.floor(Math.random() * 3);
document.write(ad[adNo]);