Don't use 'event' in popupClose
Don't use 'event' in popupClose

It doesn't work on firefox and we don't need it anyway

fotinakis/travis-web,fauxton/travis-web,Tiger66639/travis-web,fotinakis/travis-web,fauxton/travis-web,fotinakis/travis-web,jlrigau/travis-web,2947721120/travis-web,jlrigau/travis-web,fauxton/travis-web,mjlambert/travis-web,jlrigau/travis-web,2947721120/travis-web,mjlambert/travis-web,2947721120/travis-web,jlrigau/travis-web,fauxton/travis-web,2947721120/travis-web,Tiger66639/travis-web,mjlambert/travis-web,travis-ci/travis-web,travis-ci/travis-web,fotinakis/travis-web,travis-ci/travis-web,Tiger66639/travis-web,mjlambert/travis-web,travis-ci/travis-web,Tiger66639/travis-web