Images in a drop down list.

[ProWeb]

I want to put images into a drop down list of colours.
i.e.
<select name="Colours">
<option><img src="terracotta.jpg">Terracotta</option>
<option><img src="blue.jpg">Blue</option>
<option><img src="green.jpg">Green</option>
</select>

I've obviously tried it without success, but was wondering if anyone had achieved something similar?

[Fang]

Not x-browser; in FF you can have a background image.