function changeImg(toimg){
  document.getElementById('pic').style.visibility = 'visible';
  document.getElementById('pic').style.background = toimg;
}

function enLarge(){
  img = document.getElementById('pic').style.backgroundImage;
  img = img.substring (4);
  last = img.lastIndexOf("_");
  img = img.substring (0, last);
  window.open (img +'.jpg', 'full');
}

function breakOut(){
  if (top.location != location) {
        top.location.href = document.location.href ;
                  }
}