function email() {
	var string1 = "jarno";
	var string2 = "lehtimaki";
	var string3 = "cs";
	var string4 = "helsinki";
	var string5 = "fi";
	var string6 = string1 + "." + string2 + "@" + string3 + "." + string4 + "." + string5;
	document.write("<a href=" + "mail" + "to:" + string6 + ">" + string6 + "</a>");
}