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) {
      header_03_over = newImage("/img/header/header_03-over.gif");
      header_04_over = newImage("/img/header/header_04-over.jpg");
      header_06_over = newImage("/img/header/header_06-over.jpg");
      header_08_over = newImage("/img/header/header_08-over.jpg");
      header_09_over = newImage("/img/header/header_09-over.jpg");
      header_10_over = newImage("/img/header/header_10-over.jpg");
      menu_01_over = newImage("/img/menu/menu_01-over.gif");
      menu_02_over = newImage("/img/menu/menu_02-over.gif");
      menu_03_over = newImage("/img/menu/menu_03-over.gif");
      menu_04_over = newImage("/img/menu/menu_04-over.gif");
      menu_05_over = newImage("/img/menu/menu_05-over.gif");
      menu_06_over = newImage("/img/menu/menu_06-over.gif");
      menu_07_over = newImage("/img/menu/menu_07-over.gif");
      menu_08_over = newImage("/img/menu/menu_08-over.gif");
      limage1      = newImage("/img/misc/tux-info-hat.png");
      footer_03_over = newImage("/img/footer/footer_03-over.jpg");
      preloadFlag = true;
   }
}



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) {
      header_03_over = newImage("/img/header/header_03-over.gif");
      header_04_over = newImage("/img/header/header_04-over.jpg");
      header_06_over = newImage("/img/header/header_06-over.jpg");
      header_08_over = newImage("/img/header/header_08-over.jpg");
      header_09_over = newImage("/img/header/header_09-over.jpg");
      header_10_over = newImage("/img/header/header_10-over.jpg");
      menu_01_over = newImage("/img/menu/menu_01-over.gif");
      menu_02_over = newImage("/img/menu/menu_02-over.gif");
      menu_03_over = newImage("/img/menu/menu_03-over.gif");
      menu_04_over = newImage("/img/menu/menu_04-over.gif");
      menu_05_over = newImage("/img/menu/menu_05-over.gif");
      menu_06_over = newImage("/img/menu/menu_06-over.gif");
      menu_07_over = newImage("/img/menu/menu_07-over.gif");
      menu_08_over = newImage("/img/menu/menu_08-over.gif");
      footer_03_over = newImage("/img/footer/footer_03-over.jpg");
      preloadFlag = true;
   }
}