if (document.images) {
    var imageNames = new Array("businessoverview", "comcastworkplace", "broadbandcommuter", "comcastpro");
    var imageExtension = ".gif";
    var imagePath = "images/";
    var allMyImages = new Array(imageNames.length);
    var curName = "";
    var gWhichGlowing = "";
    for (var i=0; i<imageNames.length; i++) {
        curName = imageNames[i];
        allMyImages[curName] = new Array("off","on");
        allMyImages[curName]["off"] = new Image();
        allMyImages[curName]["off"].src = imagePath + curName + imageExtension;
        allMyImages[curName]["on"] = new Image();
        allMyImages[curName]["on"].src = imagePath + curName + "-over" + imageExtension;
    }
}
function Glow(whichImage) {
    if (document.images) {
        document[whichImage].src = allMyImages[whichImage]["on"].src;
        gWhichGlowing = whichImage;
    }
}
function DeGlow() {
    if (document.images) {
        document[gWhichGlowing].src = allMyImages[gWhichGlowing]["off"].src;
        gWhichGlowing = "";
    }
}

function linkTracking(name, redirect, windowName, params) {
    var url = "http://www.comcast.net/tracking.jsp?link=" + name + "&redirect=" + escape(redirect);
    if (typeof (windowName) == "string") {
        if (typeof (params) == "string") {
            window.open(url, windowName, params);
        } else {
            window.open(url, windowName);
        }
    } else {
        window.location = url;
    }
}