function prevEmail(ID, emailserver, emailname, emailinner) {
	var span = document.getElementById(ID);
	if (span != null) {
		var str = "<a href='mailto:" + emailname + "@" + emailserver + "'>";
		if (emailinner == '') str += emailname + "@" + emailserver; else str += emailinner;
		str += "</a>";
		span.innerHTML = str;
	}
}