The author has little to do other than to reformulate email addresses and the page structure and styling is not impacted at all.

Instead of … href=”mailto:name@domain.tld” … write href=”email:domain.tld!name” and the following suffices to make the necessary transformations (it also transforms any occurreneces of the mangled email address in the link innerHTML) :

for (var m, x = document.getElementsByTagName ("a"), i = x.length; i--;)
if (m = x[i].href.match (/email:(.+)!(.+)/i)) {
x[i].href = 'mailto:' + m[2] + '@' + m[1];
x[i].innerHTML = x[i].innerHTML.replace (m[1] + "!" + m[2], m[2] + '@' + m[1]);
}