Function filter

documentation/javascript/application.js:10336–10340

(event)

  };

  function filter(event){
    var tagName = (event.target || event.srcElement).tagName;
    // ignore keypressed in any elements that support keyboard data input
    return !(tagName == 'INPUT' || tagName == 'SELECT' || tagName == 'TEXTAREA');
  }

  // initialize key.<modifier> to false
  for(k in _MODIFIERS) assignKey[k] = false;