eBay provides a "photo album" feature, which allows your bidders to view multiple photos right in the auction by clicking thumbnails. However, this feature is available only if you're using eBay's Picture Services to host your photos, which means you're paying extra for rather limited photos.
Simply place this code in your auction description:
<table cellpadding=10 cellspacing=0 border=1> <tr><td> <img src="view1.jpg" border=0 name="view">  </td></tr> <tr><td align=center> <img src="view1s.jpg" border=1  onClick="document.images['view'].src='view1.jpg';"> <img src="view2s.jpg" border=1  onClick="document.images['view'].src='view2.jpg';"> </td></tr> </table>
This creates a simple, two-cell table, shown in Figure 5-10. The upper cell contains the first of several images, and the lower cell contains the thumbnails for all images.
document.images['view'].src = 'view2.jpg';
The code is simple enough, but its greatest strength is its flexibility.
The first thing to do is put your own images in the photo album. Start by replacing view1.jpg on line  with the full URL of the first image you wish to appear in the album. Then do the same for each of the thumbnails, view1s.jpg and view2s.jpg on lines  and . Finally, specify the full URLs for the corresponding full-size images, replacing view1.jpg and view2.jpg.
You can have as many thumbnails as you'd like?simply duplicate line  or  for each additional image. The table is designed to accommodate a virtually unlimited number of thumbnails without modification; for instance, if there are more thumbnails than will fit on a line, they will simply wrap to the next line. If needed, use the <br> tag to insert line breaks between groups of thumbnails.
<a href="view1.jpg"><img src="view1s.jpg" width=60 height=45 border=1 onClick="document.images['view'].src='view1.jpg';return false;"></a>
For an extra fee, eBay will give you a "slide show" of your images, which is nothing more than a photo album on a timer. See [Hack #62] for a way to make your own timed slide show.