ProcessGBSBookInfo() fix

gistfile1.js

<script>
// Function to process GBS info and update the dom.
function ProcessGBSBookInfo(booksInfo) {
  for (isbn in booksInfo) {
    var url_elem = document.getElementById(isbn);
    var pic_elem = document.getElementById("google_book");
    var gbs_elem = document.getElementById("GBSDiv");
    var bookInfo = booksInfo[isbn];
    if (bookInfo) {
      gbs_elem.innerHTML="<fieldset style='width:100px'><div align=center></div></fieldset>";
      if (bookInfo.thumbnail_url) {
        gbs_elem.innerHTML="<fieldset style='width:100px'><div align=center><a href=" + bookInfo.info_url +" style='text-decoration:none' target='_blank'><img src=\"" + bookInfo.thumbnail_url + "\" width=\"52\" /><br>Link to Google Books</a></div></fieldset>";
      }
    }
  }
}
</script>