if (document.images) {

    // on
    buttonon = new Image();
    buttonon.src = "assets/images/btnLearnMore_over.gif";
    button2on = new Image();
    button2on.src = "assets/images/btnLearnMore_over.gif";
    button3on = new Image();
    button3on.src = "assets/images/btnLearnMore_over.gif";


    //off
    buttonoff = new Image();
    buttonoff.src = "assets/images/btnLearnMore.gif";
    button2off = new Image();
    button2off.src = "assets/images/btnLearnMore.gif";
    button3off = new Image();
    button3off.src = "assets/images/btnLearnMore.gif";



}


function imgOn(imgName) {
    if (document.images) {
        document[imgName].src = eval(imgName + "on.src");
    }
}

//Function to 'deactivate' images.
function imgOff(imgName) {
    if (document.images) {
        document[imgName].src = eval(imgName + "off.src");
    }
}

var win = null;
function NewWindow(mypage, myname, w, h, scroll) {
    LeftPosition = (screen.width) ? (screen.width - w) / 2 : 0;
    TopPosition = (screen.height) ? (screen.height - h) / 2 : 0;
    settings =
'height=' + h + ',width=' + w + ',top=' + TopPosition + ',left=' + LeftPosition + ',scrollbars=' + scroll + ',resizable'
    win = window.open(mypage, myname, settings)
}