How can I pass a variable that has been calculated in the success callback of an ajax function, to the document.ready ?

I have this code

 function loadActions()
        {
            var countDiv;


            $.ajax({
                type: "POST",
                cache: false,
                url:"modules/actions/actions.php",      

                success : function (data) {



                    $("#actions-container").html(data);
                    $('.action-details').hide();
                    countDiv = $('.action-tab-odd').length + $('.action-tab-even').length ;



                }

            });

            return countDiv;
        }

   $(document).ready(function(){



        var count = loadActions();


   });

But count is allways undefined. How can I get this to work?

Thank you