Slightly tweaked your script to display inline

    $("h2 a").each(function(){
       var email = decodeURIComponent(this.href).slice(13).split("&subject=");
       var subject = email[1];
       var body = email[0].replace(/\n( )+/g, "\n");
       var parent = $(this).parent("h2")
       parent.after($("<div />").text(body));
       parent.after($("<h4 />").text(subject));
    });