<!--
if (document.images) {
  image1on = new Image();
  image1on.src = imagesdir + "home_on.jpg";
  image2on = new Image();
  image2on.src = imagesdir + "output2002_on.jpg";
  image3on = new Image();
  image3on.src = imagesdir + "faculties_on.jpg";
  image4on = new Image();
  image4on.src = imagesdir + "institutes_on.jpg";
  image5on = new Image();
  image5on.src = imagesdir + "collaboration_on.jpg";
  image6on = new Image();
  image6on.src = imagesdir + "search_on.jpg";
  image7on = new Image();
  image7on.src = imagesdir + "sitemap_on.jpg";
  image8on = new Image();
  image8on.src = imagesdir + "contactus_on.jpg";            
  
  image1off = new Image();
  image1off.src = imagesdir + "home.jpg";
  image2off = new Image();
  image2off.src = imagesdir + "output2002.jpg";
  image3off = new Image();
  image3off.src = imagesdir + "faculties.jpg";
  image4off = new Image();
  image4off.src = imagesdir + "institutes.jpg";
  image5off = new Image();
  image5off.src = imagesdir + "collaboration.jpg";
  image6off = new Image();
  image6off.src = imagesdir + "search.jpg";
  image7off = new Image();
  image7off.src = imagesdir + "sitemap.jpg";
  image8off = new Image();
  image8off.src = imagesdir + "contactus.jpg";  
}

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");
  }
}
//-->