function sttop()
{
google_ad_client = "pub-2603749986890135";
google_ad_slot = "8249249619";
google_ad_width = 468;
google_ad_height = 15;
document.write('<script type="text\/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"><\/script>');
}
function stmiddle()
{
google_ad_client = "pub-2603749986890135";
google_ad_slot = "0690954690";
google_ad_width = 300;
google_ad_height = 250;
document.write('<script type="text\/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"><\/script>');
}
function stbottom()
{
google_ad_client = "pub-2603749986890135";
google_ad_slot = "3987709739";
google_ad_width = 336;
google_ad_height = 280;
document.write('<script type="text\/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"><\/script>');


}