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) {
    overview004 = newImage("images/overview-04.gif");
    state006 = newImage("images/state-06.gif");
    products008 = newImage("images/products-08.gif");
    law010 = newImage("images/law-10.gif");
    data012 = newImage("images/data-12.gif");
    announce014 = newImage("images/announce-14.gif");
    links016 = newImage("images/links-16.gif");
    concern018 = newImage("images/concern-18.gif");
    preloadFlag = true;
  }
}