gistfile1.js

// everyone's new favorite closure pattern:
(function(window,document,undefined){ ... })(this,this.document);

// minified:
(function(b,a,c){ ... })(this,this.document);

// which means all uses of window/document/undefined inside the closure 
// will be single-lettered, so big gains in minification.

// it also will speed up scope chain traversal a tiny tiny little bit.



// tech details:
(function(){ })() // is a self executing anonymous function
// and when we 
(function(myname){  }('paul') // we're just bypassing a var declaration at the top

// and then in this case, `this` is always the global object when in global scope so 
// we can safely use it.