title: Web site exhibits JavaScript error on iPad / iPhone under 3G but not under WiFi
body: <p>Connecting to <a href="http://www.manage-us.com" rel="noreferrer">http://www.manage-us.com</a> on an iPad under 3G [used to] result in a JavaScript error which can be seen if the developer console has been enabled.  If the same page is accessed using the same iPad under a WiFi connection no error is displayed. [The error has now gone because I applied the fix below!].</p>
  
  <p>Why is this?</p>
  
  <p>I've tried simulating low bandwidth (using dummynet) on Safari on Mac and on the iPad simulator on Mac.  This does not reproduce the problem.</p>
  
  <p>I am currently suspecting this is a problem being introduced by my mobile operator in the UK (O2) which is known to modify some content through a proxy cache such as downgrading image files.  If you can confirm that you don't experience this problem when connecting by 3G on iPad or iPhone through another mobile operator that would be helpful.</p>