I am trying to do a image change when the mouse rolls over the image, but I have to use CSS not java script. I got the image to show up, but it shows up behind the first image, it doesn't replace it.
<a href="http://google.com"><img id="rollover" src="cat.jpg" width="250" height="188" alt="Cat"></a>
#rollover:hover {background-image: url(dog.jpg);}
img {padding: 5px;}