<public:component /> <public:attach event="onmouseover" onevent="em();" /> <public:attach event="onmouseout" onevent="deem();" />
<script language="JScript">
function em() {
 element.style.borderWidth='1px';
 element.style.borderColor='#f00';
 element.style.borderStyle='solid';
}
function deem() {
 element.style.borderWidth='1px';
 element.style.borderColor='#000';
 element.style.borderStyle='solid';
}

</script>