//The following functions activates & deactivates rollovers
            
function img_act(imgName){
  if (document.images) {
  imgOn = eval(imgName + "on.src");
  document [imgName].src = imgOn;
  }
}

function img_inact(imgName) {
  if (document.images) {
  imgOff = eval(imgName + "off.src");
  document [imgName].src = imgOff;
    }
  }