if (document.images) {
  imageAon = new Image();
  imageAon.src = "../tempimages/power-gen-ownersON.gif";

  imageAoff = new Image();
  imageAoff.src = "../tempimages/power-gen-owners.gif";
  
  imageBon = new Image();
  imageBon.src = "../tempimages/retail-electricityON.gif";

  imageBoff = new Image();
  imageBoff.src = "../tempimages/retail-electricity.gif";
  
  imageCon = new Image();
  imageCon.src = "../tempimages/large-consumersON.gif";

  imageCoff = new Image();
  imageCoff.src = "../tempimages/large-consumers.gif";
  
  imageDon = new Image();
  imageDon.src = "../tempimages/financial-entitiesON.gif";

  imageDoff = new Image();
  imageDoff.src = "../tempimages/financial-entities.gif";
  
}


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