function OpenMenu(id){ 
			document.getElementById( id ).style.visibility = 'visible';
		}
		function CloseMenu(id){ 
			document.getElementById( id ).style.visibility = 'hidden';
		}
		
if (document.images) {
   img1 = new Image(); img1.src = "gif/s_menu_01_b.gif";
   img2 = new Image(); img2.src = "gif/s_menu_02_b.gif";  
   img3 = new Image(); img3.src = "gif/s_menu_03_b.gif";  
   img4 = new Image(); img4.src = "gif/s_menu_04_b.gif";  
   img5 = new Image(); img5.src = "gif/s_menu_05_b.gif"; 
   img6 = new Image(); img6.src = "gif/s_menu_06_b.gif"; 
   img7 = new Image(); img7.src = "gif/s_menu_07_b.gif"; 
  
}
function setImage(img, image) {
   if (img) {
      img.src = image;
   }
}