$(document).ready(function(){
    var loading = false;
    
    if ($('#z_form_guestbook').length>0)
        $('#footer-wrap').hide();
   
    function lastAddedLiveFunc()
    {
        var lastId=$("div#z-guestbook-items > div.blockquote:last").attr("id");
        loading = true;
        $('div#z-guestbook-loader').html("<img src='z/_custom_/loading.gif' />");

        $.ajax({
            type: "POST",
            url: "./z/order_ajax.php",
            data: "f=getGuestBookItem&start="+lastId+'&data-iks='+$('#z-guestbook-container').attr("data-iks"),
            success: function(msg)
            {
                var JSON = jQuery.parseJSON(msg);

                if (JSON.result>0)
                {
                    $("div#z-guestbook-items > div.blockquote:last").after(JSON.data);
                    $('div#z-guestbook-loader').empty();
                    //pokazanie stopki w ff
                    if ($("div#z-guestbook-items > div.blockquote:last").attr("id")==1)
                    {
                        $('#footer-wrap').fadeIn('slow');
                        loading=true;
                    }
                }
                else
                {
                    $('div#z-guestbook-loader').html(JSON.message);
                    $('#footer-wrap').fadeIn('slow');      
                }
            },
            complete: function()
            {
                loading=false;
            },
            error: function (XMLHttpRequest, textStatus, errorThrown)
            {
                $("div#z-guestbook-items > div.blockquote:last").after('Error-> o: '+XMLHttpRequest+' k: '+textStatus+' r: '+ errorThrown);
            }
        });
	
    };
	
    $(window).scroll(function(){
        if (($(window).scrollTop() > $(document).height() - $(window).height() - 2)  && !loading)
        //if (!loading && $(document).scrollHeight-$(document).scrollTop-$(document).offsetHeight<$(document).offsetHeight)
        {
            lastAddedLiveFunc();
        }
    });

});