function reverse(str) {
	n = new String("")

	for (var i = str.length - 1; i >= 0; i--) {
		n += str.substr(i, 1);
	}
	 return n;
}

function printEmail(user, domain, tld) {

	email = reverse(user) + "@" + reverse(domain) + "." + reverse(tld)
	document.write(email);

}

function printEmailLink(user, domain, tld, clas, target) {

	email = reverse(user) + "@" + reverse(domain) + "." + reverse(tld)
	link = "<a href='mailto:"
	link += email
	link += "'"
	if (clas) { link += " class='" + clas + "'" }
	if (target) { link += " target='" + target + "'" }
	link += ">"
	link += email
	link += "</a>"
	document.write(link);
}