gistfile1.js

  sections: ['checklist','news'],

swap: function(section) {

    for (var i = 0, len = _.sections.length; i != len; i++) {
      if (section != _.sections[i]) {
        window[_.sections[i]].d();
      }
    }

    window[section].i();

  }
  
  
  var news = {

  i:function() {

    $('.news').addClass('on');

  },

  d: function() {

    $('.news').removeClass('on');

  }


}