if (document.images) {       
img1on = new Image();		
img1on.src ="../images/menu_04_over.jpg"; 
img1off = new Image();		  	
img1off.src = "../images/menu_04.jpg"; 
img2on = new Image();		
img2on.src ="../images/menu_05_over.jpg"; 
img2off = new Image();		  	
img2off.src = "../images/menu_05.jpg"; 
img3on = new Image();		
img3on.src ="../images/menu_06_over.jpg"; 
img3off = new Image();		  	
img3off.src = "../images/menu_06.jpg";
img4on = new Image();		
img4on.src ="../images/menu_07_over.jpg"; 
img4off = new Image();		  	
img4off.src = "../images/menu_07.jpg";


}
function imgOn(imgName) {
if (document.images) {
document[imgName].src = eval(imgName + "on.src"); }}
function imgOff(imgName) {
if (document.images) {
document[imgName].src = eval(imgName + "off.src"); }}