if (document.images) {
  image1on = new Image();
  image1on.src = "images/homeon4a.gif";

  image1off = new Image();
  image1off.src = "images/homeoff4a.gif";

  image2on = new Image();
  image2on.src = "images/corpon4a.gif";

  image2off = new Image();
  image2off.src = "images/corpoff4a.gif";

  image3on = new Image();
  image3on.src = "images/productson4a.gif";

  image3off = new Image();
  image3off.src = "images/productsoff4a.gif";

  image4on = new Image();
  image4on.src = "images/bpnon4a.gif";

  image4off = new Image();
  image4off.src = "images/bpnoff4a.gif";

  image5on = new Image();
  image5on.src = "images/msdson4a.gif";

  image5off = new Image();
  image5off.src = "images/msdsoff4a.gif";

  image6on = new Image();
  image6on.src = "images/linkson4a.gif";

  image6off = new Image();
  image6off.src = "images/linksoff4a.gif";
  
  image7on = new Image();
  image7on.src = "images/contacton4a.gif";

  image7off = new Image();
  image7off.src = "images/contactoff4a.gif";

  image8on = new Image();
  image8on.src = "images/corpsubon1.gif";

  image8off = new Image();
  image8off.src = "images/corpsuboff1.gif";

  image9on = new Image();
  image9on.src = "images/corpsubon2.gif";

  image9off = new Image();
  image9off.src = "images/corpsuboff2.gif";

  image10on = new Image();
  image10on.src = "images/corpsubon3.gif";

  image10off = new Image();
  image10off.src = "images/corpsuboff3.gif";
  
  image11on = new Image();
  image11on.src = "images/corpsubon4.gif";

  image11off = new Image();
  image11off.src = "images/corpsuboff4.gif";

  image12on = new Image();
  image12on.src = "images/kiecitesubon1a.gif";

  image12off = new Image();
  image12off.src = "images/kiecitesuboff1a.gif";

  image13on = new Image();
  image13on.src = "images/micnelfsubon1a.gif";

  image13off = new Image();
  image13off.src = "images/micnelfsuboff1a.gif";
  
  image14on = new Image();
  image14on.src = "images/boracolsubon1a.gif";

  image14off = new Image();
  image14off.src = "images/boracolsuboff1a.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");
    }
  }
}