

	 var circles_placeholder = canvas.selectAll("circle")
	 				.data(smallData)
	 				.enter();
	 var circles = circles_placeholder.append("circle")
	 				.attr("cx", map_same)
	 				.attr("cy", map_same)
	 				.attr("r", 25)
	 				.transition()
	 				.delay(500)
	 				.attr("cx", 250)
	 				.attr("fill", "red");


	 smallData = [200, 250];
	 circles_placeholder = canvas.selectAll("circle")
	 				.data(smallData)
	 				.enter();
	 circles = circles_placeholder.append("circle")
	 				.attr("cx", map_same)
	 