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) {
    benefits_over     = newImage("/images/toolbar/benefits_over.gif");
    benefits_over003  = newImage("/images/toolbar/benefits_over-03.gif");
    benefits_over004  = newImage("/images/toolbar/benefits_over-04.gif");
    benefits_over005  = newImage("/images/toolbar/benefits_over-05.gif");
    benefits_over007  = newImage("/images/toolbar/benefits_over-07.gif");
    benefits_over009  = newImage("/images/toolbar/benefits_over-09.gif");
    benefits_over011  = newImage("/images/toolbar/benefits_over-11.gif");
    benefits_over013  = newImage("/images/toolbar/benefits_over-13.gif");
    benefits_over015  = newImage("/images/toolbar/benefits_over-15.gif");
    benefits_over017  = newImage("/images/toolbar/benefits_over-17.gif");
    benefits_over019  = newImage("/images/toolbar/benefits_over-19.gif");
    benefits_over021  = newImage("/images/toolbar/benefits_over-21.gif");
    benefits_over026  = newImage("/images/toolbar/benefits_over-26.gif");
    benefits_over028  = newImage("/images/toolbar/benefits_over-28.gif");
    benefits_over030  = newImage("/images/toolbar/benefits_over-30.gif");
    benefits_over032  = newImage("/images/toolbar/benefits_over-32.gif");

    preloadFlag = true;
  }
}