<!DOCTYPE html> <html> <head> <title>JS-Framework</title> </head> <body> <div id="myDiv"></div> <script> function Framework(id) { return document.getElementById(id); } Framework.now = function() { return (new Date).getTime(); } Element.prototype.addClass = function(className) { this.className += ' ' + className; return this; } Element.prototype.content = function(content) { this.innerHTML = content; return this; } var $ = Framework; //alert($.now()); $('myDiv').addClass('foo').content('bar'); </script> </body> </html>