How can I add a scrollbar to an iphone site?

I created a mini-version of a site that's been optimized for the iPhone, but on one of the pages, I have a scrollbar in a container, and it show开发者_如何学编程s up when looking at it on the computer, but not at all on the iphone... Is there some kind of special magic that I need or something? The css is simple:

#container {
  overflow-x: hidden;
  overflow-y: scroll;
}

You will have to use some javascript, such as jScrollPane, or tell users to use two fingers to scroll. There are no traditional scrollbars on the iPhone.