function init(){
    if(document.getElementById('promo')){
        var se;
        incomingcookie = document.cookie;
        incomingcookie ? se = 0 : se = 1;
        var beenhere = incomingcookie.indexOf("skip");
        if (se == 0 && beenhere < 0){showit()};
    }
}

function set_cookie(){
    var nextyear = new Date();
    nextyear.setFullYear(nextyear.getFullYear()+1);
    document.cookie = "skip=skip; expires="+nextyear.toGMTString();
}

function showit(){
        document.getElementById('promo').style.display="block";
        document.getElementById('promo').style.top= 0 - 12 -(document.getElementById('promo').offsetHeight) + "px";
        document.getElementById('maindiv').style.top = 12 +(document.getElementById('promo').offsetHeight) + "px";
    }
window.onload=init;