function NewWin(url, winName, w, h) {
    //alert(SelectedNode.ID + "=" + SelectedNode.Text);
    w = w + 20;
    var x = screen.width;
    var y = screen.height;
    var left = (x / 2) - (w / 2);
    var top = (y / 2) - (h / 2);

    var options = "toolbar=0,location=0,directories=0,status=1,scrollbars=1,menubar=0,resizable=1,width=" + w + ",height=" + h + ",top=" + top + ",left=" + left
    if (winName == null)
        winName = "_blank";

    var NewWindow = window.open(url, winName, options, true);
    if (NewWindow) {
        NewWindow.focus();
    }
}