function initMenu() {

  var openDiv = null;
  var openA = null;  

  $('#accordion .content-box').hide();
  $('#accordion li .open-close a').click(
    function() {
      var ahref = $(this);
      var checkElement = ahref.addClass('open').parent().prev();
        if (openDiv) {
            openDiv.slideUp('normal');
            $(openA).removeClass('open').text('Развернуть');
        }
        
        if (openA == this) {
            openDiv = null;
            openA = null;
        } else {
            checkElement.slideDown('normal');
            $(this).text('Скрыть');
            openDiv = checkElement;
            openA = this;          
        }
        
        return false;
      }
    );
  }
$(document).ready(function() {initMenu();});