操作COOKIE的函数

一个同学慧涛分享给我的他写的操作cookie的函数，贴出来，做个笔记：

 //操作cookie
    //删除cookie hcookie('cookiename','','del');
    //查询cookie hcookie('cookiename');
    //添加修改cookie hcookie('cookiename','cookievalue')
    function hcookie(key,value,del){
        var v = arguments[1]?arguments[1]:null;
        var d = arguments[1]?arguments[1]:'nodel';
        if(del == "del"){
            var date=new Date();
            date.setTime(date.getTime()-10000);
            document.cookie=key+"="+value+"; expires="+date.toGMTString();
            return 'del_ok';
        }else{
            if(value==null){
                var strCookie=document.cookie;
                var arrCookie=strCookie.split("; ");
                var result;
                for(var i=0;i<arrCookie.length;i++){
                    var arr=arrCookie[i].split("=");
                    if(key==arr[0]){
                        result=arr[1];
                        break;
                    }
                }
                return result;
            }else{
                document.cookie=key+"="+value;
                return 'add_ok';
            }
        }
    }