Pattern for creating a JavaScript plugin, from http://codereview.stackexchange.com/a/21147

plugin.js

(function(ns){

  //private scoping
  var privVar = '...';
  function priv(){...}

  //expose a function
  ns.myFunc = function(){...};

}(this.myLib = this.myLib || {}));

//using the exposed myFunc
myLib.myFunc();