$(function(){
    
    function ajax_load(){
        var position = $('#' + script).offset();
        if($(window).scrollTop() + $(window).height() >= $('#' + script).height() + position.top && busy == false){
            busy = true;
            $('#ajaxloader').slideDown(300);
            $.ajax({
                url: "/assets/load_" + script + ".php?page=" + page + "&parent=" + parent + "&archive=" + archive,
                success: function(html){
                    if(html){
                        $("#" + script).append(html);
                        $('#ajaxloader').slideUp(300);
                        busy = false;
                        page++;
                        if($(window).scrollTop() + $(window).height() >= $('#' + script).height() + $('.top_bar').height() && busy == false){
                            ajax_load();
                        }
                    } else {
                        if((script == "category" || script == "news") && page == 0){
                            $("#" + script).append("<p class=\"m_12\"><i>Žádné články k zobrazení.</i></p>");
                        }
                        if(script == "events" && page == 0 && !archive){
                            $("#" + script).append("<p class=\"m_12\"><i>Nejsou naplánováné žádné akce.</i></p>");
                        }
                        if(script == "events" && page == 0 && archive){
                            $("#" + script).append("<p class=\"m_12\"><i>V archivu nejsou žádné akce.</i></p>");
                        }
                        if(script == "gallery" && page == 0){
                            $("#" + script).append("<p class=\"m_12\"><i>Žádná alba k zobrazení.</i></p>");
                        }
                        $('#ajaxloader').slideUp(300);
                        $('#ajaxloader').remove();
                    }
                }
            });
        }
    }

    $(window).scroll(function(){
        ajax_load();
    });
    
    ajax_load();
});