Listing and Loading Nodes with AJAX
First off if the content is only text and its size is not very big I recommend you strongly not to use Ajax , unless you can do it using views in the following way:

Be sure to enable the Ajax in views:



now this code will load the view.

$("links_click").click(function(){
            $.ajax({
                url: Drupal.settings.basePath + 'views/ajax',
                type: 'POST',
                dataType: 'json',
                data: 'view_name='+your_view&amp;'view_display_id='+view_display_id,
                success: function(response) {
                  var output = response[1].data;
                  $(".your_container").html(output);
                },
                error: function(data) {
                    alert('An error occured!');
                }
              });
        });


for more detail visit this link.