Change url and title with Javascript ShareThis

addthis.update('share', 'url', url);

addthis.update('share', 'title', $("title").text());

Reload AddThis Script Ajax

Quando se faz replace do html do AddThis, temos de fazer reload do script, aqui fica uma maneira de fazer (Precisa de jquery).

var script = 'http://s7.addthis.com/js/250/addthis_widget.js#domready=1';
if (window.addthis){
    window.addthis = null;
}
$.getScript( script );

Source:
http://stackoverflow.com/questions/1603835/addthis-button-will-not-work-inside-ajax-but-will-work-normally