function setcookie(name,value){  
        var Days = 30;  
        var exp  = new Date();  
        exp.setTime(exp.getTime() + Days*24*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 (arr[2]);  
        }else{&n