set cookie

Set a cookie.

function setCookie(name,value,days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        var expires = \"; expires=\"+date.toGMTString();
    }
    else var expires = \"\";
    document.cookie = name+\"=\"+value+expires+\"; path=\";
}