var myrulesGlobal = {
  '.toggleDiv' : function(element){
    element.onclick = function(){
      if (element.parentNode.parentNode.className == "open")
        element.parentNode.parentNode.className = "closed";
      else
        element.parentNode.parentNode.className = "open";
    }
    element.onmouseover = function (){
      var theText = "expand/collapse";
      element.alt=theText;
      element.title=theText;
    }
  }
};
  Behaviour.register(myrulesGlobal);