(function($) {
	$.extend({
		tablesorterPager: new function() {
			
			function updatePageDisplay(table) {
				var c = table.config;
			
				c.totalPages = Math.ceil(c.totalRows / c.size);
				
				// hide pager container if only one page
				$('#filter-message').remove();
				if (c.totalPages == 0) {
					$('<div></div>').text($('#filter-nomatchtext').text()).attr('id', 'filter-message').insertBefore(c.container);
				}
				if (c.totalPages <= 1) {
					c.container.hide();
				} else {
					c.container.show();
				}

				if (c.totalPages != c.prevTotalPages) {
					// remove all list items between prev and next
					$(c.cssPageNr).each(function(){
						$(this).parent().remove();
					});
					// rebuild pageDisplay with new totalPages count
					setPageDisplay(table);
				}
				$(c.cssPageNr).each(function(){
					if ((c.page + 1) == parseInt($(this).text())) {
						$(this).addClass('active');
					} else {
						$(this).removeClass('active');
					}
				});

			}
			this.updatePageDisplay = updatePageDisplay;

			function setPageDisplay(table) {
				var c = table.config;
				c.prevTotalPages = c.totalPages;
				for (var i = c.totalPages; i > 0; i--) {
					var pageNr = i < 10 ? "0" + i : i;
					var $link = $('<a></a>').text(pageNr).attr('href','#').addClass('pageNr');
					$('<li></li>').html($link).insertAfter($(c.cssPrev,c.container));
				}
				$(c.cssPageNr).click(function() {
					moveToPageNr(table, this);
					return false;
				});

			}

			
			function setPageSize(table,size) {
				var c = table.config;
				c.size = size;
				c.totalPages = Math.ceil(c.totalRows / c.size);
				c.pagerPositionSet = false;
				moveToPage(table);
				fixPosition(table);
			}
			
			function fixPosition(table) {
				var c = table.config;
				if(!c.pagerPositionSet && c.positionFixed) {
					var c = table.config, o = $(table);
					if(o.offset) {
						c.container.css({
							top: o.offset().top + o.height() + 'px',
							position: 'absolute'
						});
					}
					c.pagerPositionSet = true;
				}
			}
			
			function moveToFirstPage(table) {
				var c = table.config;
				c.page = 0;
				moveToPage(table);
			}
			
			function moveToLastPage(table) {
				var c = table.config;
				c.page = (c.totalPages-1);
				moveToPage(table);
			}
			
			function moveToNextPage(table) {
				var c = table.config;
				c.page++;
				if(c.page >= (c.totalPages-1)) {
					c.page = (c.totalPages-1);
				}
				moveToPage(table);
			}
			
			function moveToPrevPage(table) {
				var c = table.config;
				c.page--;
				if(c.page <= 0) {
					c.page = 0;
				}
				moveToPage(table);
			}

			function moveToPageNr(table, el) {
				var c = table.config;
				c.page = parseInt($(el).text()) - 1;
				moveToPage(table);
			}
						
			
			function moveToPage(table) {
				var c = table.config;
				if(c.page < 0 || c.page > (c.totalPages-1)) {
					c.page = 0;
				}
				
				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 = $(table.tBodies[0]);
				
				// clear the table body
				
				$.tablesorter.clearTableBody(table);
				
				for(var i = s; i < e; i++) {
					
					//tableBody.append(rows[i]);
					
					var o = rows[i];
					var l = o.length;
					for(var j=0; j < l; j++) {
						
						tableBody[0].appendChild(o[j]);

					}
				}
				
				fixPosition(table,tableBody);
				
				$(table).trigger("applyWidgets");
				
				if( c.page >= c.totalPages ) {
        			moveToLastPage(table);
				}
				updatePageDisplay(table);
			}
			
			this.appender = function(table,rows) {
				if (table.config.debug) {
					$.tablesorter.info('tablesorter.pager.appender() invoked');
				}
				
				var c = table.config;
				
				c.rowsCopy = rows;
				c.totalRows = rows.length;
				c.totalPages = Math.ceil(c.totalRows / c.size);
				
				renderTable(table,rows);
			};
			
			this.defaults = {
				size: 10,
				offset: 0,
				page: 0,
				totalRows: 0,
				totalPages: 0,
				prevTotalPages: 0,
				container: null,
				cssNext: '.next',
				cssPrev: '.prev',
				cssFirst: '.first',
				cssLast: '.last',
				cssPageDisplay: '.pagedisplay',
				cssPageSize: '.pagesize',
				cssShowAll: '.showall',
				cssPageNr: '.pageNr',
				seperator: "/",
				positionFixed: true,
				appender: this.appender
			};
			
			this.setTotalRows = function(nrRows, table) {
				table.config.totalRows = nrRows;
			}
			
			this.construct = function(settings) {
				
				return this.each(function() {
					
					config = $.extend(this.config, $.tablesorterPager.defaults, settings);
					
					var table = this, pager = config.container;
				
					$(this).trigger("appendCache");


					updatePageDisplay(table);


					$(config.cssFirst,pager).click(function() {
						moveToFirstPage(table);
						return false;
					});
					$(config.cssNext,pager).click(function() {
						moveToNextPage(table);
						return false;
					});
					$(config.cssPrev,pager).click(function() {
						moveToPrevPage(table);
						return false;
					});
					$(config.cssLast,pager).click(function() {
						moveToLastPage(table);
						return false;
					});
					$(config.cssPageSize,pager).change(function() {
						setPageSize(table,parseInt($(this).val()));
						return false;
					});

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