Show different image in repsonse to onMouseOver and onMouseOut events

Move mouse over the image and it changes. We've added another image

<A href="http://www.webliminal.com/ernie/index.html"
onMouseOver="document.images[0].src='ernie_young.jpg';"
onMouseOut="document.images[0].src='ernies_drivein.jpg';">
<IMG src="erniebw.gif"></A>