// JavaScript Document

es1_on = new Image;
es1_on.src = "images/es1-on.gif";
es1_off = new Image;
es1_off.src = "images/es1.gif";

es2_on = new Image;
es2_on.src = "images/es2-on.gif";
es2_off = new Image;
es2_off.src = "images/es2.gif";

es3_on = new Image;
es3_on.src = "images/es3-on.gif";
es3_off = new Image;
es3_off.src = "images/es3.gif";

function swap(img1, img2)
	{
		document.images[img1].src= eval(img2+".src");
	}