JQ 保存 cookie

function  Storage_cookie(cookie_name,status){
    var date=new Date();
    date.setTime(date.getTime()+30*60*1000); //设置date为当前时间+30分
    document.cookie=cookie_name + "="+ status;
//    document.cookie=cookie_name + "="+ status+"; expires="+date.toGMTString();
}
function getCookie(c_name){
    if (document.cookie.length>0){
        c_start=document.cookie.indexOf(c_name + "=")
        if (c_start!=-1) {
            c_start=c_start + c_name.length+1
            c_end=document.cookie.indexOf(";",c_start)
        if (c_end==-1) c_end=document.cookie.length
            return unescape(document.cookie.substring(c_start,c_end))
        }
    }
    return "";
}