Datalist Background

In datalist i have to show the images... Before that i have to set background for every image.. how can i give background image in datalist..?
 
Example: http://www.csstemplateheaven.com/demo/classic_luxury_demo/gallery.html
 
In this they have used White backgroud image with some shadows for every image from the database.. Likewise i have to do it in datalist..
 
I have to set white backfround with some shadows for every images from database...
 
Please help to solve the above issue..!