I'm using Alertify in a yeoman project using require.js to load it. It works pretty well in all Browsers I have seen so far, but it completely hangs Safari on iOS 5.1.1 as well as latest Chrome.

noticeUser: ->
  if @model.get('status') == 'completed'
    Alertify.set labels:
      ok: "Thanks"
    Alertify.alert "Your data has been sent."
  else
    Alertify.set labels:
      ok: "Ok, I'll try later..."
    Alertify.alert "Error during sending your data!"

This piece of coffe triggers the error. Both browsers become completely unresponsive to touch events in the rendering area. Orientation change still works, and the page can be reloaded, but fails then in the same situation.

Any ideas what could cause this behaviour? Any workarounds?

Regards
Jan