function Cover(bottom, top, ignoreSize) {
    var net = document.getElementById("net");
    var Height = document.body.scrollHeight > document.body.offsetHeight ? document.body.scrollHeight : document.body.offsetHeight;
    Height += 50;
    net.style.height = Height + "px";
    net.style.width = "100%";
    net.style.display = "block";
    document.getElementById("ctl00_LeftBlock1_ddlSelectPreds").style.visibility = "hidden";
    var page_body = document.getElementById("page_body");
    var ifOpera = (navigator.appName == "Opera") ? 1 : 0;
    if (!ifOpera) {
        page_body.setAttribute('scroll', 'no');
        page_body.style.overflow = "hidden";
    }
    window.scrollTo('0', '0');
}

function CloseBanner() {
    document.getElementById("ctl00_divMegaBanner").style.visibility = "hidden";
    var myDate = new Date();
    myDate.setDate(myDate.getDate() + 5);
    setCookie("foo", "bar", myDate, "/");
}

function showBanner() {
    var myVar = getCookie("foo");
    if(myVar != null)
        document.getElementById("ctl00_divMegaBanner").style.visibility = "hidden";
}

function setCookie(name, value, expires, path, domain, secure) {
    document.cookie = name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

function getCookie(name) {
    var cookie = " " + document.cookie;
    var search = " " + name + "=";
    var setStr = null;
    var offset = 0;
    var end = 0;
    if (cookie.length > 0) {
        offset = cookie.indexOf(search);
        if (offset != -1) {
            offset += search.length;
            end = cookie.indexOf(";", offset)
            if (end == -1) {
                end = cookie.length;
            }
            setStr = unescape(cookie.substring(offset, end));
        }
    }
    return (setStr);
}

function MM_findObj(n, d) { //v4.01
    var p, i, x; if (!d) d = document; if ((p = n.indexOf("?")) > 0 && parent.frames.length) {
        d = parent.frames[n.substring(p + 1)].document; n = n.substring(0, p);
    }
    if (!(x = d[n]) && d.all) x = d.all[n]; for (i = 0; !x && i < d.forms.length; i++) x = d.forms[i][n];
    for (i = 0; !x && d.layers && i < d.layers.length; i++) x = MM_findObj(n, d.layers[i].document);
    if (!x && d.getElementById) x = d.getElementById(n); return x;
}

function openCategoryChangeLinkText(link) {
    var obj = MM_findObj(link);
    if (obj.className == 'opened') obj.className = 'closed';
    else if (obj.className == 'closed') obj.className = 'opened';
}