function googlesearch (str) 
 { 
// $.cookie('the_cookie'); // 获得cookie
//$.cookie('the_cookie', 'the_value'); // 设置cookie
//$.cookie('the_cookie', 'the_value', { expires: 7 }); //设置带时间的cookie
$.cookie('the_cookie', '', { expires: -1 }); // 删除

//$.cookie('the_cookie', null); // delete cookie
//alert($.cookie('the_cookie')); // 获得cookie
var wq=document.getElementById(str).value;
 var link="http://www.google.com/search?domains=www.tianan-cyber.com&sitesearch=www.tianan-cyber.com&q="+wq;
 window.open(link); 
}