<!--

if (document.images) {
  image1on = new Image();
  image1on.src = "images/flecha-on.gif";

  image2on = new Image();
  image2on.src = "images/ant-on.gif";

  image3on = new Image();
  image3on.src = "images/sig-on.gif";

  
  
  image1off = new Image();
  image1off.src = "images/flecha-off.gif";

  image2off = new Image();
  image2off.src = "images/ant-off.gif";

  image3off = new Image();
  image3off.src = "images/sig-off.gif";
}


function turnOn(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + "on.src");
  }
}


function turnOff(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + "off.src");
  }
}


//-->