title: How to close page in UIWebView and go back to app
body: <p>In my app by pressing a button I want to open <code>UIWebView</code> on full screen, the <code>UIWebView</code>  will load a HTML page that will hold a button that will close the <code>UIWebView</code> and return to app.</p>
  
  <p>The problem is that I fail to make the button close the page and return to app.
  I tried <code>parent.history.back()</code> and <code>history.back</code> and several versions of <code>self.close()</code> but nothing seems to  work (BTW it work in browser but not from <code>UIWebView</code>.</p>
  
  <p>any idea?
  thanks
  -Z</p>