var pep1 = 'mai';
var pep2 = 'lto:';
var name = 'enquiries';
var domain = 'wpmf';
var ext = 'info'; 
document.write('<a href="');
document.write(pep1+pep2);
document.write(name);
document.write('&#64;');
document.write(domain);
document.write('.');
document.write(ext); 
document.write('">'); 
document.write(name+'<br />&#64;'+domain+'.'+ext+'</a>');