function openWindow(url, intWidth, intHeight, intScrollbars)
{
    wintop = (window.screen.availHeight - intHeight)/2;
    winleft = (window.screen.availWidth - intWidth)/2;
    wResult = window.open(url, null, "WIDTH=" + intWidth + ",HEIGHT=" + intHeight + ",SCROLLBARS=" + intScrollbars + ",LEFT=" + winleft + ",TOP=" + wintop);
}