ahí va Kalili:
<html>
<head>
<!-- Copiar dentro del tag HEAD -->
<style type="text/css">
#im {
FILTER: alpha(opacity=50)
}
</style>
<script language="JavaScript1.2">
function high(which2)
{
theobject=which2;
highlighting=setInterval("highlightit(theobje ct)",50);
}
function low(which2)
{
clearInterval(highlighting);
which2.filters.alpha.opacity=50;
}
function highlightit(cur2)
{
if(cur2.filters.alpha.opacity<100)
cur2.filters.alpha.opacity+=5
else if(window.highlighting)
clearInterval(highlighting)
}
</script>
</head>
<body>
<!-- Copiar dentro del tag BODY -->
<!-- Colocar dentro del tag IMG -->
<img id="im" onmouseover="high(this)" onmouseout="low(this)">
</body>
</html>
saludos
<html><center><img src="http://www.globalmedialab.com/firma/zpez.jpg" height=79 width=352 border="0" alt= ""></a>
</center></html>