如何从我的iPhone应用中的UIWebView链接跳转到App Store ?

I want to take a user OUT of my app and into the App Store when they click on a link within a UIWebView in my app. But when I click on the link, nothing happens (sim AND device both). How can I jump to the App Store from a UIWebView link in my iPhone app?I want to take a user OUT of my app and into th