Annoying bugs in Firefox related to input fields

1. style changes break click event handling on input elements
   test page:
   http://jsfiddle.net/ms4tmw3x/3/
   http://jsfiddle.net/ms4tmw3x/4/
   bug:
   https://bugzilla.mozilla.org/show_bug.cgi?id=422295
   https://bugzilla.mozilla.org/show_bug.cgi?id=493416
2. .focus() on a number input fires a blur event
   test page:
   http://jsfiddle.net/tn71zboe/1/
   bug:
   https://bugzilla.mozilla.org/show_bug.cgi?id=1057858