function SetCookie(name,value,expire) {    
//expire Сʱµ¥Î»
    var exp  = new Date();    
    exp.setTime(exp.getTime() + expire*60*60*1000);    
    document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();    
}    
   
function getCookie(name) {    
    var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));    
    if(arr != null) return unescape(arr[2]); return null;    
}    
   
function delCookie(name){    
    var exp = new Date();    
    exp.setTime(exp.getTime() - 1);    
    var cval=getCookie(name);    
    if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();    
}