var rand3 = Math.random();
var rn3 = Math.floor(rand3*100+1);

<!-- GEE
if(rn3>=0 && rn3<=100) 
{
google_ad_client = "pub-0044876415402739";
google_ad_width = 160;
google_ad_height = 600;
google_ad_format = "160x600_as";
google_ad_type = "text_image";
google_ad_channel ="9514492183";
google_color_border = "000099";
google_color_bg = "FFFFFF";
google_color_link = "000099";
google_color_text = "000000";
google_color_url = "FF6600";
document.write('<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script>');
}