Small "Loading..." ScriptUI palette

function openFileIll (oFile)
{
    // Prepare a "Loading..." windowless palette
    var waitWin = new Window("palette", "Loading...", undefined, {borderless: true});
        waitWin.onShow = function()
        {
            waitWin.location.x = ($.screens[0].right / 2) - (waitWin.size[0] / 2);
            waitWin.location.y = ($.screens[0].bottom / 2) - (waitWin.size[1] / 2) - 400;
        }
        var waitPanel = waitWin.add("group");
            var waitText = waitPanel.add("statictext", undefined, "Loading...");

    waitWin.show();
    app.open(oFile);
    waitWin.hide();
    waitWin.close();
}