function OpenWindow(url, width, height) {
    var curentDateTime = new Date();
    window.open(url, "ChildWindow" + curentDateTime.getMilliseconds(), GetSettings(width, height)).focus();
    return false;
}
function GetSettings(width, height) {
    var LeftPosition = (screen.width - width) / 2;
    var TopPosition = (screen.height - height) / 4;
    var settings = 'width=' + width + ',height=' + height + ',top=' + TopPosition + ',left=' + LeftPosition + ',scrollbars=yes,location=no,directories=no,status=yes,menubar=no,toolbar=no,resizable=yes';
    return settings;
}