(function($) {

    $.extend({
        tablesorterPager: new function() {

            function appendPager(table) {
                var p = $("<div>").addClass("tablesorterPager").append(
							$("<form>").append(
									$("<input type=button value='<'>").addClass("prev")
								)
								.append(
									$("<input type=text value=1 >").addClass("page")
								).append(
									$("<span>").addClass("seperator").html("/")
								).append(
									$("<input type=text value=1 readonly=readonly>").addClass("pages")
								).append(
									$("<input type=button value='>' >").addClass("next")
								)
							);

                $(table).after(p);
                return p;
            }

            function updatePageTotals(config) {

                var s = $("input.pages", config.pagerContainer).val(config.pages);

            }

            function updatePage(config) {

                var s = $("input.page", config.pagerContainer).val((config.page + 1));
            }

            function moveToPage(table) {
                var c = table.config;
                if (c.page < 0 || c.page > (c.pages - 1)) {
                    c.page = 0;
                }
                updatePage(c);
                renderTable(table, c.rowsCopy);
            }

            function renderTable(table, rows) {

                var c = table.config;
                var l = rows.length;
                var s = c.page * c.size;
                var e = (s + c.size);
                if (e > rows.length) {
                    e = rows.length;
                }
                var tableBody = $('tbody:first', table).empty();

                for (var i = s; i < e; i++) {
                    tableBody.append(rows[i]);
                }


                //$('tbody:first',table).html(rows.slice(s,e).join(""));
            }


            this.construct = function(settings) {



                return this.each(function() {
                    var pager = appendPager(this), table = this;

                    config = $.extend(this.config, $.tablesorterPager.defaults, settings);
                    config.pagerContainer = pager;

                    $(this).trigger("appendCache");

                    $("input.next", pager).click(function() {
                        var c = table.config;
                        c.page++;
                        if (c.page >= (c.pages - 1)) {
                            c.page = (c.pages - 1);
                        }
                        moveToPage(table);
                    });
                    $("input.prev", pager).click(function() {
                        var c = table.config;
                        c.page--;
                        if (c.page <= 0) {
                            c.page = 0;
                        }
                        moveToPage(table);
                    });
                    $("input.page", pager).change(function() {
                        var c = table.config;
                        c.page = (parseInt($(this).val()) - 1);
                        moveToPage(table);
                    });
                });
            };

            this.appender = function(table, rows) {

                var config = table.config;

                config.rowsCopy = rows;

                config.pages = Math.ceil(rows.length / config.size);

                updatePageTotals(config);

                renderTable(table, rows);
            };
            this.defaults = {
                size: 15,
                offset: 0,
                page: 0,
                pages: 0,
                appender: this.appender
            };

        }
    });
    // extend plugin scope
    $.fn.extend({
        tablesorterPager: $.tablesorterPager.construct
    });

})(jQuery);