Moved to Design and Graphics.
He's using css to add to the background of each of the forum rows. He numbers them 1,2,3,4, etc and it calls the background image inline -
First row in the group:
HTML Code:
<td style="background:#28323b url(style_images/tren_z/1/wtgs1.jpg) no-repeat right;;" class="row2">
Second row:
HTML Code:
<td style="background:#28323b url(style_images/tren_z/1/wtgs2.jpg) no-repeat right;;" class="row2">
(His mistakes in the css, not my copy/paste mistake.)