<html><head></head>
<body>
<script language="Javascript">
<!--
function f(bl){
var i;
var num=1;
for(i=bl;i>0;i--)
num=num*i;
document.getElementById("tx").value=num;
}
//-->
</script>
<table><tr><td>
<a href="#" onclick="f(2)">one</a>
<a href="#" onclick="f(4)">two</a>
<a href="#" onclick="f(6)">three</a>
</td></tr>
<tr><td><input type="text" value="" id="tx"></td></tr>
</table>
</body></html>