$(document).ready(function() {
        $('.toggle').hide();
        $('img').attr('src','images/checkmark1.jpg');
        $('.toggler').click( function() {
          var target = this.id + '_content';
          // Use ID-selectors to toggle a single element.
          $('#' + target).toggle();
          // Use class-selectors to toggle groups of elements.
          $('.' + target).toggle();
          $('.toggle.always').toggle();
        });
        $('#toggle_everything').click( function() { $('.toggle').toggle(); });
    });