lol
I got what your saying,

Well, actually this image : http://i27.tinypic.com/2w6xyjp.png is repeated 3 times for the 'category'
Because, this is as coded in the CSS
Now, if you want it to repeat just one time, then you'll have to edit the Codes(not CSS)
I don't know, how's the 'thead' division for your style, but try to do this

<table>
<thead>WA</thead>
<tbody>
BLAH...BLAH...
</tbody>
</table>

Now, here, the 'thead' represents this image http://i27.tinypic.com/2w6xyjp.png

So, got it now ?