For the onMouseOver effect...
taken from: http://www.w3schools.com/jsref/jsref_onmouseover.asp
<html>
<head>
<script type="text/javascript">
function mouseOver()
{
document.b1.src ="b_blue.gif";
}
function mouseOut()
{
document.b1.src ="b_pink.gif";
}
</script>
</head><body>...