AB.world.newRun = function()
	{
	    var world = new Box2D();
		// Code for Three.js initial drawing of objects.
		// Should include one of:
	 	// ABWorld.init2d ( arguments ); 	
	 	// ABWorld.init3d ( arguments ); 	
	};


	AB.world.nextStep = function()		 
	{
		// Code for Three.js re-drawing of objects.  
	};


	AB.world.endRun = function()
	{
	};