toc1on = new Image();        
	toc1on.src = "images/leaf_1_ON.gif";

	toc1off = new Image();
	toc1off.src = "images/leaf_1.gif";

	toc2on = new Image();
	toc2on.src = "images/leaf_2_ON.gif";

	toc2off = new Image();
	toc2off.src = "images/leaf_2.gif";

	toc3on = new Image();
	toc3on.src = "images/leaf_3_ON.gif";

	toc3off = new Image();
	toc3off.src = "images/leaf_3.gif";

	toc4on = new Image();
	toc4on.src = "images/leaf_4_ON.gif";

	toc4off = new Image();
	toc4off.src = "images/leaf_4.gif";
	
	toc5on = new Image();
	toc5on.src = "images/marine-over.jpg";

	toc5off = new Image();
	toc5off.src = "images/marine.jpg";
	
	toc6on = new Image();
	toc6on.src = "images/commercial-over.jpg";

	toc6off = new Image();
	toc6off.src = "images/commercial.jpg";
	
	toc7on = new Image();
	toc7on.src = "images/domestic-over.jpg";

	toc7off = new Image();
	toc7off.src = "images/domestic.jpg";

	

	
function img_act(imgName) {
        
	imgOn = eval(imgName + "on.src");
        document [imgName].src = imgOn;

}



function img_inact(imgName) {

	imgOff = eval(imgName + "off.src");
       	document [imgName].src = imgOff;

}