// Global variables
var originalsrc = '/images/wales_main.gif';

function swap(id, newsrc){
  var obj = document.getElementById(id);
  if (obj) obj.src = newsrc;
  return 0;
}
function swapOff(id){
  var obj = document.getElementById(id);
  if (obj) obj.src = originalsrc;
  return 0;
}