$(document).ready(function(){
  var inAction = false;
  
  $(".button").click(function(){
    if(inAction == false){  
      inAction = true;
      $(".button").toggleClass("active");
      $($("#button-container div[@class='button'] a").attr("href")).slideToggle("slow", 
        function(){
          $($("#button-container div.button.active a").attr("href")).slideToggle("slow",
          function(){
            inAction = false;
          });
        });
    }
    return false;
  });
  
});