function findObj(n, d) {
    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 = findObj(n, d.layers[i].document);
    if (!x && d.getElementById) x = d.getElementById(n);
    return x;
}

function swapImage() {
    var i, j = 0, a = swapImage.arguments, x;
    document._sr = new Array;
    for (i = 0; i < a.length - 2; i += 3) {
        if ((x = findObj(a[i])) != null) {
            document._sr[j++] = x;
            if (!x.oSrc) x.oSrc = x.src;
            x.src = a[i + 2];
        }
    }
}

function swapImageRestore() {
    var i, x, a = document._sr;
    for (i = 0; a && i < a.length && (x = a[i]) && x.oSrc; i++)
        x.src = x.oSrc;
}

function showHideLayer() {
    var i, p, v, obj, args = showHideLayer.arguments;
    for (i = 0; i < (args.length - 2); i += 3)
        if ((obj = findObj(args[i])) != null) {
            v = args[i + 2];
            if (obj.style) {
                obj = obj.style;
                v = (v == 'show') ? 'visible' : (v == 'hide') ? 'hidden' : v;
            }
            obj.visibility = v;
        }
}