The option html tag don't apply background-image css property. The expected behavior is to add background-image on a line of select control. Exemple : <select> <option style="background-image: url(icon1.png);"> Element 1</option> <option style="background: url(icon2.png) no-repeat top left;"> Element 2 </option> </select>
*** This bug has been marked as a duplicate of bug 9846 ***