function generate_address( username, hostname ) {
        var domain = "berkeley.edu";
        var atsign = "@";
		if(hostname != "") {
	        var addr = username + atsign + hostname + "." + domain;
		} else {
			var addr = username + atsign + domain;
		}
        document.write( 
          "<" + "a" + " " + "href=" + "mail" + "to:" + addr + ">" +
          addr +
          "<\/a>");
}
function generate_address1(username,hostname,domain_index) {
	var allDomains = [ "yahoo.com",
				    "earthlink.net",
					"hotmail.com",
					"ucsc.edu",
					"geomorph.com",
					"ufrj.br",
					"purdue.edu",
					"Dartmouth.edu",
					"canterbury.ac.nz",
					"vom.com",
					"uoregon.edu",
					"usgs.gov",
					"sc.edu"]
	var domain 	= allDomains[domain_index];
	if(hostname != "") domain = "."+domain;
	var atsign = "&#64;";
    var addr = username + atsign + hostname + domain;
    document.write( 
          "<" + "a" + " " + "href=" + "mail" + "to:" + addr + ">" +
          addr +
          "<\/a>");
}