Mine

function displayEmail(){	var user = 'example';	var domain = 'example.com';	var subdomain = 'sub';	var email = document.createElement('a');	email.href = 'mailto:' + user + '@' + subdomain + '.' + domain;	email.appendChild(document.createTextNode(user + '@' + subdomain + '.' + domain));		document.getElementById('email').appendChild(email);}