function magnify(theImg){
  var bounds=theImg.getBoundingClientRect();
  var bigImg = document.getElementsByName("bigImg");
  if (bigImg.length > 0) {
  	document.body.removeChild(bigImg[0]);
  }
  var bigImg = document.createElement('<img name="bigImg">');
  bigImg.style.position = "absolute";
  bigImg.style.top = bounds.top - 50 + document.body.scrollTop; 
  bigImg.style.left = bounds.left;
  bigImg.style.border = "inset thick blue";
  bigImg.onclick = function(){this.parentNode.removeChild(this)};
  document.body.appendChild(bigImg);
  bigImg.src = theImg.src;
  bigImg.height=150;
}