gistfile1.m

- (void)showLoginWindow:(id)sender
{   
    if(!_loginView)
    {
        _loginView = [[CPView alloc] initWithFrame:CGRectMake(0,0,600,600)];
        var email = [[CPTextField alloc] initWithFrame:CGRectMake(0,0,100,20)];
        [email setBordered:YES]; [email setBezeled:YES];
        [_loginView addSubview:email];
    }

    if( [_window contentView] == _loginView )
        return;

    var windowRect = [_window frame];
    var difference = ( [_loginView frame].size.height - [[_window contentView] frame].size.height )
    windowRect.origin.y -= difference;
    windowRect.size.height += difference;

    [_loginView setHidden: YES];
    [_window setContentView: _loginView];
    [_window setFrame: windowRect display: YES animate: YES];
    [_loginView setHidden: NO];
    
	[self showWindow:sender];
}