function ShowDivs(divToToggle, divCoverID) {
     //show background cover div
    elem = document.getElementById(divCoverID);
    elem.style.display = "block";
    // div is faded in
     fade(divToToggle, true);
 }

 function HideDivs(divToToggle, divCoverID) {
    // hide background cover div
     elem = document.getElementById(divCoverID);
    elem.style.display = "none";
    // div is faded out
    fade(divToToggle, false);
}

function goToPage(PageToGoTo) {
    window.location = PageToGoTo;
}

function setClassName(id, className) {
    var element;
    if (document.getElementById && (element = document.getElementById(id))) {
        element.className = className;
    }
}

var fadeOpacity = new Array();
var fadeTimer = new Array();
var fadeInterval = 100;  // milliseconds

function fade(o, d) {
    // o - Object to fade in or out.
    // d - Display, true =  fade in, false = fade out
    var obj = document.getElementById(o);

    if ((fadeTimer[o]) || (d && obj.style.display != 'block') || (!d && obj.style.display == 'block')) {
        if (fadeTimer[o])
            clearInterval(fadeTimer[o]);
        else
            if (d) fadeOpacity[o] = 0;
        else fadeOpacity[o] = 9;

        obj.style.opacity = "." + fadeOpacity[o].toString();
        obj.style.filter = "alpha(opacity=" + fadeOpacity[o].toString() + "0)";

        if (d) {
            obj.style.display = 'block';
            fadeTimer[o] = setInterval('fadeAnimation("' + o + '",1);', fadeInterval);
        } else
            fadeTimer[o] = setInterval('fadeAnimation("' + o + '",-1);', fadeInterval);
    }
}

function fadeAnimation(o, i) {
    // o - o - Object to fade in or out.
    // i - increment, 1 = Fade In

    var obj = document.getElementById(o);
    fadeOpacity[o] += i;
    obj.style.opacity = "." + fadeOpacity[o].toString();
    obj.style.filter = "alpha(opacity=" + fadeOpacity[o].toString() + "0)";

    if ((fadeOpacity[o] == '9') | (fadeOpacity[o] == '0')) {
        if (fadeOpacity[o] == '0')
            obj.style.display = 'none';
        else {
            obj.style.opacity = "1";
            obj.style.filter = "alpha(opacity=100)";
        }

        clearInterval(fadeTimer[o]);
        delete (fadeTimer[o]);
        delete (fadeTimer[o]);
        delete (fadeOpacity[o]);
    }
}