It's easy, just enter email to field and copy generated code to your HTML page.
<a id="m_s_631540"></a>
<script>
var panw = 'da' + 'rt' + '.w' + 'ei' + 'de' + 'r@' + 'de' + 'ad' + '.s' + 'ta' + 'r';
var pjgh = document.getElementById('m_s_631540');
pjgh.innerHTML = !(pjgh.innerHTML) ? panw : pjgh.innerHTML;
pjgh.href = 'mailto:' + panw;
</script>
<span id="m_s_470419"></span>
<script>
var hhfg = 'da' + 'rt' + '.w' + 'ei' + 'de' + 'r@' + 'de' + 'ad' + '.s' + 'ta' + 'r';
var umgd = document.getElementById('m_s_470419');
umgd.innerHTML = !(umgd.innerHTML) ? hhfg : umgd.innerHTML;
</script>