function arrowOn(img) {

    img.src = "../Images/WebTools/playArrow_over.png"

}

function arrowOff(img) {

    img.src = "../Images/WebTools/playArrow.png"

}


function preview(assetId, caption) {


    tb_show(caption, "../JQuery/SWFIFrame.aspx?KeepThis=true&assetId=" + assetId + "&format=tvad&TB_iframe=true&height=350&width=540", "");

}


var itemHighlighted = false;

function navRollOn(obj) {


    itemHighlighted = false;

    var offImg = obj.src;

    if (offImg.indexOf("_over") != -1) {
        //item is highlighted
        itemHighlighted = true
        return;
    }

    var onImg = offImg.replace(".gif", "_over.gif");
    obj.src = onImg;

}

function navRollOff(obj) {

    if (itemHighlighted) {
        return;
    }

    var onImg = obj.src;
    var offImg = onImg.replace("_over.gif", ".gif");
    obj.src = offImg;

}