function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
 }
}
window.onload = externalLinks;

function ShowEmail(user, domain, anchor) {
	var OutText = '';
	OutText += '<a href="mailto:' + user + '@' + domain + '">';
	if (anchor != '') OutText += anchor;
	else OutText += user + '@' + domain;
	OutText  += '</a>';
	document.write(OutText);
}