<!-- // hide SCRIPT from old browsers

// define images

if(document.images) {

  image01 = new Image;
  image02 = new Image;
  image11 = new Image;
  image12 = new Image;
  image21 = new Image;
  image22 = new Image;
  image31 = new Image;
  image32 = new Image;
  image41 = new Image;
  image42 = new Image;
  image51 = new Image;
  image52 = new Image;
  
// source images

  image01.src = "images/buttons/bt_homepage1.gif";
  image02.src = "images/buttons/bt_homepage2.gif";
  image11.src = "images/buttons/bt_productsservices1.gif";
  image12.src = "images/buttons/bt_productsservices2.gif";
  image21.src = "images/buttons/bt_projectgallery1.gif";
  image22.src = "images/buttons/bt_projectgallery2.gif";
  image31.src = "images/buttons/bt_careeropportunities1.gif";
  image32.src = "images/buttons/bt_careeropportunities2.gif";
  image41.src = "images/buttons/bt_aboutus1.gif";
  image42.src = "images/buttons/bt_aboutus2.gif";
  image51.src = "images/buttons/bt_contactus1.gif";
  image52.src = "images/buttons/bt_contactus2.gif";
}

// MouseOver Function

function swapOn(imgLocation) {
  if(document.images) {
    document.images[imgLocation].src = eval(imgLocation + "2.src");
  }
}

// MouseOut Function

function swapOff(imgLocation) {
  if(document.images) {
    document.images[imgLocation].src = eval(imgLocation + "1.src");
  }
}

// end hiding SCRIPT -->