cat <<END
<a href="${num}-$((i-1)).html">&lt;&lt;&lt;</a>
<a href="page-${num}.html#$photo">Thumbnails</a>
<a href="${num}-$((i+1)).html">&gt;&gt;&gt;</a>
<br />
<br />
<a href="${num}-$((i+1)).html">
  <img border='0' src='${backhref}/${photos_dir}/${photo}' />
</a>
<br />
<br />
<a href="${backhref}/${photos_dir}/${photo}">Direct link</a>
<h3>${photo}</h3>
END