function newImage(arg) {
	     if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
      }

          function changeImages() {
	     if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
    }

             var preloadFlag = false;
          function preloadImages() {
	    if (document.images) {
		menu_Layer_1_over = newImage("images/menu_Layer_1_over.jpg");
		menu_Layer_2_over = newImage("images/menu_Layer_2_over.jpg");
		menu_Layer_3_over = newImage("images/menu_Layer_3_over.jpg");
		menu_Layer_4_over = newImage("images/menu_Layer_4_over.jpg");
		menu_Layer_5_over = newImage("images/menu_Layer_5_over.jpg");
		menu_Layer_6_over = newImage("images/menu_Layer_6_over.jpg");
		menu_Layer_7_over = newImage("images/menu_Layer_7_over.jpg");
		menu_Layer_8_over = newImage("images/menu_Layer_8_over.jpg");
		menu_Layer_9_over = newImage("images/menu_Layer_9_over.jpg");
		menu_Layer_10_over = newImage("images/menu_Layer_10_over.jpg");
		preloadFlag = true;
	}
    }