function HideBadImages() {
    for (var i = 0; i < document.getElementById('maincontent').getElementsByTagName('img').length; i++) {
        var cpyImg = new Image();
        cpyImg.src = document.images[i].src;
        if (!cpyImg.width) {
            document.images[i].style.display = "none";
        }
    }

    //  Now check to see if any images are over 630px width
    var pix = document.getElementById('maincontent').getElementsByTagName('img');
    maxW = 630;
    for (i = 0; i < pix.length; i++) {
        w = pix[i].width;
        h = pix[i].height;
        if (w > maxW) {
            f = 1 - ((w - maxW) / w);
            pix[i].width = w * f;
            pix[i].height = h * f;
        }
    }
}