var first = 'ma';
var second = 'il';
var third = 'to:';
var address = 'sales';
var domain = 'eng&#105&#110emodels.com';
document.write('<a href="');
document.write(first+second+third);
document.write(address+'desk');
document.write('&#64;');
document.write(domain);
document.write('" title="Send us mail">');
document.write('E-mail<\/a>');