Put your email info in place of mine and paste into your HTML:

<script language="Javascript">
<!--
// original content taken from Nic's JavaScript Page with permission
// lack of these three lines will result in copyright infringment
// made by: Nic's JavaScript Page - http://www.javascript-page.com

var user = "frank";
var domain = "keepitsimpleweb.com";
var mail = user + "@" + domain;

var message = "frank at keepitsimpleweb.com";

document.write("<a href=\"mailto:"+mail+"\">"+message+"</a>");
//-->
</SCRIPT>