// JavaScript Document
var first = 'ma';
var second = 'il';
var third = 'to:';

// example: user554554
var address = 'stay';

// example: hotmail
var domain = 'frithlodge';

var ext = 'co.uk'; 
document.write('<a href="');
document.write(first+second+third);
document.write(address);
document.write('&#64;');
document.write(domain);
document.write('.');
document.write(ext); 
document.write('">'); 
document.write('Email reservations</a>');