if (document.images) {
pic1on= new Image(102,147);
pic1on.src="index/door-roll.jpg";  
pic2on= new Image(200,200);
pic2on.src="index/house-1.jpg";  
pic3on= new Image(200,200);
pic3on.src="index/house-2.jpg";  
pic4on= new Image(200,200);
pic4on.src="index/house-3.jpg";  
pic5on= new Image(200,200);
pic5on.src="index/house-4.jpg";  
pic6on= new Image(200,200);
pic6on.src="index/house-5.jpg";  
pic1off= new Image(102,147);
pic1off.src="index/cmas-2x3-2x3.jpg";}
function lightup(imgName) {
if (document.images) {
imgOn=eval(imgName + "on.src");
document[imgName].src= imgOn;}}
function turnoff(imgName) {
if (document.images) {
imgOff=eval(imgName + "off.src");
document[imgName].src= imgOff;}}