public static String head(){
        return "<title>Soa Browser</title>\n" +
                "<script type=\"text/javascript\" src=\"http://code.jquery.com/jquery-2.0.2.min.js\"></script>\n" +
                "<script type=\"text/javascript\" src=\"http://mottie.github.io/tablesorter/js/jquery.tablesorter.js\"></script>\n" +
                "<script type=\"text/javascript\" src=\"http://mottie.github.io/tablesorter/js/jquery.tablesorter.widgets.js\"></script>\n"+
                css()+
                js();
    }