				for(var i=0;i<200;i=i+1) {
					myObjects.push({
						x: randMinMax(0, 640),
						y: randMinMax(0, 480),
						width: randMinMax(10, 20),
						height: randMinMax(10, 20),
						vx: randMinMax(-0.5,0.5),
						vy: randMinMax(-0.5,0.5),
						check: false
					});
				}

				updateTotal();
			};
			
			
			/*
			 * draw Quadtree nodes
			 */
			var drawQuadtree = function(node) {
				
				var bounds = node.bounds;
			
				//no subnodes? draw the current node
				if(node.nodes.le