if (document.images) {       
// картинки после наведения курсора     
img1on = new Image();		
img1on.src = "images/menu_down_03.jpg"; 
img2on = new Image();		
img2on.src = "images/menu_down_05.jpg"; 
img3on = new Image();		
img3on.src = "images/menu_down_06.jpg"; 
img4on = new Image();		
img4on.src = "images/menu_down_07.jpg"; 
img5on = new Image();		
img5on.src = "images/menu_down_08.jpg"; 
// картинки после отведения курсора
img1off = new Image();		  	
img1off.src = "images/menu_03.jpg"; 
img2off = new Image();		  	
img2off.src = "images/menu_05.jpg"; 
img3off = new Image();		  	
img3off.src = "images/menu_06.jpg"; 
img4off = new Image();		  	
img4off.src = "images/menu_07.jpg"; 
img5off = new Image();		  	
img5off.src = "images/menu_08.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");        }}