[100 px wide thumbnails. Use title to display caption in thumbnail; use alt to display caption in zoomed image]
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<li><img class="imgposlz" src="images/orange100x75.png" alt="" title="" width="100" /></li>
<li><img class="imgposlz" src="images/orange100x75.png" alt="" title="" width="100" /></li>
<li><img class="imgposlz" src="images/orange100x75.png" alt="" title="" width="100" /></li>
<li><img class="imgposlz" src="images/orange100x75.png" alt="" title="" width="100" /></li>
</ol>