Looks amazing.

BTW, looking at your javascript source, the style you've used of:

	  var className = (function() {
		function classNameConstructor() {
		  //set properties
		}

		classNameConstructor.prototype.method1 = function() {
		};

		classNameConstructor.prototype.method2 = function() {
		};

		return classNameConstructor;

	  })();

How's that working out? I started playing with it just before I got other projects which have had no significant javascript on them, just was wondering if it's a pattern you think works well?

I'm running it on two browsers side by side and they show completely different numbers for products sold per minute.