A couple of JavaScript classes with the well known .NET's classes capabilities <script type="text/javascript"> //Get the current date and time stamp. var date = DateTime.now(); //Add 100 hours to the date date = date.addHours(100); //Write the date in a formatted fashion: Monday, 15/Feb/2012 document.writeline("dddd, dd/MMM/yyyy"); </script> Yes, the usage is very similar to .NET, but it's pure Ja