title: Is there an alternative method to use onbeforeunload in mobile safari?
body: <p>Is there an alternative method to use instead of onbeforeunload in mobile-safari? I've noticed that Google was able to capture the <code>onbeforeunload</code> event in mobile-safari. Has anyone figured out how they are doing so?</p>
  
  <p>Google was able to do so using their gmail client. Create a new message... type something in the text area... hit the browser back button. It pops up a warning message. I used an iPad to do my test.</p>