if (document.images) {
	
  image1on = new Image();
  image1on.src = "images/overs/1_01_on.gif";
  image2on = new Image();
  image2on.src = "images/overs/1_02_on.gif";
  image3on = new Image();
  image3on.src = "images/overs/1_03_on.gif";
  image4on = new Image();
  image4on.src = "images/overs/1_04_on.gif";
  image5on = new Image();
  image5on.src = "images/overs/2_01_on.gif";
  image6on = new Image();
  image6on.src = "images/overs/2_02_on.gif";
  image7on = new Image();
  image7on.src = "images/overs/2_03_on.gif";
  image8on = new Image();
  image8on.src = "images/overs/2_alta_on.gif";
  
  image9on = new Image();
  image9on.src = "images/overs/8_01_on.gif";
  image10on = new Image();
  image10on.src = "images/overs/8_02_on.gif";
  image11on = new Image();
  image11on.src = "images/overs/8_03_on.gif";
  
  image100on = new Image();
  image100on.src = "images/overs/volver_on.gif";
  image101on = new Image();
  image101on.src = "images/overs/enviar_on.gif";

  image102on = new Image();
  image102on.src = "images/overs/home_on.gif";

///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////

  image1off = new Image();
  image1off.src = "images/overs/1_01_off.gif";
  image2off = new Image();
  image2off.src = "images/overs/1_02_off.gif";
  image3off = new Image();
  image3off.src = "images/overs/1_03_off.gif";
  image4off = new Image();
  image4off.src = "images/overs/1_04_off.gif";
  image5off = new Image();
  image5off.src = "images/overs/2_01_off.gif";
  image6off = new Image();
  image6off.src = "images/overs/2_02_off.gif";
  image7off = new Image();
  image7off.src = "images/overs/2_03_off.gif";
  image8off = new Image();
  image8off.src = "images/overs/2_alta_off.gif";
  
  image9off = new Image();
  image9off.src = "images/overs/8_01_off.gif";
  image10off = new Image();
  image10off.src = "images/overs/8_02_off.gif";
  image11off = new Image();
  image11off.src = "images/overs/8_03_off.gif";
  
  image100off = new Image();
  image100off.src = "images/overs/volver_off.gif";
  image101off = new Image();
  image101off.src = "images/overs/enviar_off.gif";
  
  image102off = new Image();
  image102off.src = "images/overs/home_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");
  }
}