var wname;
function open_video()
{
    link="http://www.autovendor.com/videos/dealer_video.php";
    var xMax = 1024, yMax=768;
    var xOffset = (xMax - 820)/2, yOffset = (yMax - 760)/2;
    wname=window.open(link,'centered','width=820,height=760,scrollbars=No,statusbar=No,screenX='+xOffset+',screenY='+yOffset+', top='+yOffset+',left='+xOffset+'');
    if (window.focus) {wname.focus();}
}