setcookie js

function setCookie(c_name,value,exdays)
        {
            var exdate=new Date();
            exdate.setDate(exdate.getDate() + exdays);
            var c_value=escape(value) + ((exdays==null) ? "" : "; expires="+exdate.toUTCString());
            document.cookie=c_name + "=" + c_value;
        }