var cookie = {
	ad0:20,
	ad_num : 1,
	get_cookie : function(Name){var search = Name + "=";	var returnvalue = "";if (document.cookie.length > 0) {offset = document.cookie.indexOf(search);if (offset != -1) {offset += search.length;end = document.cookie.indexOf(";", offset);if (end == -1)end = document.cookie.length;returnvalue=unescape(document.cookie.substring(offset, end));}}return returnvalue;},
	init : function(){
		for(var i=0; i<cookie.ad_num; i++){
			if(cookie.get_cookie('pp3ad_cookie_'+i)){
				continue;
			}else{
				var Then = new Date();current_time = eval('cookie.ad'+i);Then.setTime(Then.getTime() + current_time*60*1000);document.cookie='pp3ad_cookie_'+i+'=1;expires='+ Then.toGMTString()+';path=/;';
				switch(i){
					case 0:
						document.writeln('<script type="text/javascript" src="http://www.52desktop.cn/AD/tc.js"></script>');
					break;
				}				
break;
			}
		}
	}
}
cookie.init();