SOURCE CODE:
<form name="form1">
<img name="myImg" src="282ln03one.gif" onMouseOver="chgTo2()" onMouseOut="chgTo1()"><br>
</form>

<script language="javascript">
function chgTo2() {
document.form1.myImg.src="282ln03two.gif";
}
function chgTo1() {
document.form1.myImg.src="282ln03one.gif";
}

</script>