function cacheImages() {
    if (document.images) {
        var img = new Image();
        var menuButtonNames = [
                "Home", "More", "Prtnr", "CD", "Workshops", "About", "Cntct",
                "Vals", "Lang", "Inq", "Grem", "Thrpy", "Cncpt", "CmngOut"
        ];
        for (var i = 0; i < menuButtonNames.length; i++) {
            var menuButtonName = menuButtonNames[i];
            img.src = "images/Menu_"+menuButtonName+"_Over.png";
            img.src = "images/Menu_"+menuButtonName+"_Down.png";
        }
    }
}

function setImage(imgId, newSrc) {
    document.getElementById(imgId).src = newSrc;
    return true;
}


// chain code for the onload event handler
{
    var initPriorMain = init;
    init = function() {
        return initPriorMain() &&
                (cacheImages(), true);
    }
}