var $j = jQuery.noConflict();  // This line allows us to use Prototype & Scriptaculous alongside JQuery

$j(document).ready(function($) {
    $('.email').each(function() {
        var $email = $j(this);
        var address = $email.text().replace(/\s*\[at\]\s*/, '@').replace(/\s*\[dot\]\s*/g, '.');  
        $email.html('<a href="mailto:' + address + '">' + address +'</a>');
    });
})