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) {
    winec_hdr_12 = newImage("http://www.freeruntech.com/portals/images/winec_hdr_12.gif");
    winec_hdr_13 = newImage("http://www.freeruntech.com/portals/images/winec_hdr_13.gif");
    winec_hdr_14 = newImage("http://www.freeruntech.com/portals/images/winec_hdr_14.gif");
    winec_hdr_15 = newImage("http://www.freeruntech.com/portals/images/winec_hdr_15.gif");
    preloadFlag = true;
  }
}