var ref = document.referrer;
var sevisitor;
var SE = new Array('web.info.com','search.', 'del.icio.us/search', 'soso.com', '.yahoo.','/url','/search','.google.','.ask.','.baidu.','.bing.','.aol.','.answers.');

for ( var source in SE){
var match = ref.indexOf(SE[source]);
	if (match !=-1){
	sevisitor=true;
	}
}

function adsenseTop(){
if (sevisitor){
var large = '<div style="float: left;"><script type="text/javascript"><!-- \n\
google_ad_client = "ca-pub-9577804539221238"; \n\
/* 336x280 Content Top, created 7/24/09 */ \n\
google_ad_slot = "5695184796"; \n\
google_ad_width = 336; \n\
google_ad_height = 280; \n\
//--> \n\
</script> \n\
<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> \n\
</script></div> \n\
';
document.write(large);
	}
}