function openWindow(url, identifier, width, height)
{
    var popup = window.open(url, identifier, 'width=' + width + ', height=' + height + ', scrollbars=1, toolbar=0, menubar=0, status=0, location=0');

    if (! popup)
    {
        alert('A popup was blocked. Please disable your popup blocker.');
    }
    else
    {
        popup.focus();
    }


    return false;
}