function writeEmailLink(domain, user, content, rootdomain)
{// example: wrtieEmailLink("mydomain", "mrgoo", "email mrgoo", "org")
 // writes <a href="mailto:mrgoo@my_domain.org">email mrgoo</a>
	if (! rootdomain) { rootdomain = "com";};
	if (! content)
	{
		content = user + "@" + domain + "." + rootdomain;
	}
	document.write("<a href=\"mailto:" + user + "@" + domain + "." + rootdomain + "\">" + content + "</a>");
}
function writeEmail(domain, user, rootdomain)
{// example: wrtieEmail("mydomain", "mrgoo",  "org")
 // writes mrgoo@my_domain.org
	if (! rootdomain) { rootdomain = "com";};
	document.write(user + "@" + domain + "." + rootdomain);
}