Plain Code

$x('//TD[@class="bodyuser" or @class="bodyuser_u" or @class="bodyuser_r"]/DIV/A[contains(@href,"'+u+'")]').forEach(function(a) {
    var l=a.getAttribute('href');
    a.parentNode.parentNode.parentNode.className += " wlr_" + l.substr(l.indexOf(u)+u.length);
    var n=document.createElement('DIV');
    n.innerHTML='<A href="'+l+'"></A>';
    a.parentNode.parentNode.insertBefore(n, a.parentNode.parentNode.firstChild);
});
$x('//TD[@class="bodyuser_u" or @class="bodyuser_r"]').forEach(function(td) {
    td.className = 'bodyuser '+td.className;
});