view

    //allocate the view that contains the popup
    popUpView = [[UIView alloc] initWithFrame:CGRectMake(POPUP_X, POPUP_Y, POPUP_WIDTH, POPUP_HEIGHT)];
	popUpView.backgroundColor = [UIColor whiteColor];
    [self.view addSubview:popUpView];
    
    UIButton *clickHere = [UIButton buttonWithType:UIButtonTypeCustom];
    clickHere.frame = popUpView.frame;
    clickHere.backgroundColor = [UIColor redColor];
    [popUpView addSubview:clickHere];
    [clickHere setTitle:@"Click Here" forState:UIControlStateNormal];
    [clickHere addTarget:self action:@selector(clickHereTapped) forControlEvents:UIControlStateNormal];
    [popUpView bringSubviewToFront:clickHere];