cookie = {
	add:function(name,value,days){
            var expires = "";
            if (days)
            {
                var date = new Date();
                date.setTime(date.getTime()+(days*24*60*60*1000));
                expires = "; expires="+date.toGMTString();
            }
            document.cookie = name+"="+value+expires+"; path=/ ;";
	},
	get:function(name){
            var nameEQ = name + "=";
            var ca = document.cookie.split(';');
            for(var i=0;i < ca.length;i++) {
                    var c = ca[i];
                    while (c.charAt(0)==' ')
                            c = c.substring(1,c.length);
                    if (c.indexOf(nameEQ) == 0)
                            return c.substring(nameEQ.length,c.length);
                    }
                            return null;
	},
	del:function(name){
            cookie.add(name,"",-1);
	}
}