title: Background audio on ipad wont stop
body: <p>I have a website with background audio and I cant figure out how to turn it off when I close safari on the ipad. On desktop I have it mute on blur and turn back on on focus, but on the ipad when i hit the home button safari closes out but the blur event doesn't fire. So the audio audio keeps playing because safari is running in the background. </p>
  
  <p>I can get it to stop if I double tap the home button and force safari to stop running, but this is really not the user experience that i would like to promote. Is there any event that I can hook into to find out that browser is going to close?</p>