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 = '<script type="text/javascript"><!-- \n\
					google_ad_client = "pub-2288001543689791"; \n\
					google_ad_slot = "9151444027"; \n\
					google_ad_width = 468; \n\
					google_ad_height = 60; \n\
					//--> \n\
					</script> \n\
					<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> \n\
					</script> \n\'';
			document.write(large);
		}
	}