title: web app back button not working
body: <p>I have a webapp used by jquery mobile, there is lots of pages this webapp. also added home screen button its feel like native app fullscreen, so i used common header for each pages, i don't want duplicate header every pages. there is a "Back" button this header, used following codes</p>
  
  <pre><code>&lt;div data-role="header" data-theme="g" data-position="fixed" data-tap-toggle="false"&gt;
      &lt;a onclick=history.back() data-icon="back" data-direction="reverse" data-role="button"&gt;Back&lt;/a&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>i used php cookies store function also each pages, that point when user resume this webapp return to previous position...</p>
  
  <p>my problem is when user come back previous position my back button not working, is it possible to fix.? or iPhone not allow this function for webapp.?</p>