/*
 * 
 * TableSorter 2.0 - Client-side table sorting with ease!
 * Version 2.0.3
 * @requires jQuery v1.2.3
 * 
 * Copyright (c) 2007 Christian Bach
 * Examples and docs at: http://tablesorter.com
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 * 
 */
/**
 *
 * @description Create a sortable table with multi-column sorting capabilitys
 * 
 * @example $('table').tablesorter();
 * @desc Create a simple tablesorter interface.
 *
 * @example $('table').tablesorter({ sortList:[[0,0],[1,0]] });
 * @desc Create a tablesorter interface and sort on the first and secound column in ascending order.
 * 
 * @example $('table').tablesorter({ headers: { 0: { sorter: false}, 1: {sorter: false} } });
 * @desc Create a tablesorter interface and disableing the first and secound column headers.
 * 
 * @example $('table').tablesorter({ 0: {sorter:"integer"}, 1: {sorter:"currency"} });
 * @desc Create a tablesorter interface and set a column parser for the first and secound column.
 * 
 * 
 * @param Object settings An object literal containing key/value pairs to provide optional settings.
 * 
 * @option String cssHeader (optional) 			A string of the class name to be appended to sortable tr elements in the thead of the table. 
 * 												Default value: "header"
 * 
 * @option String cssAsc (optional) 			A string of the class name to be appended to sortable tr elements in the thead on a ascending sort. 
 * 												Default value: "headerSortUp"
 * 
 * @option String cssDesc (optional) 			A string of the class name to be appended to sortable tr elements in the thead on a descending sort. 
 * 												Default value: "headerSortDown"
 * 
 * @option String sortInitialOrder (optional) 	A string of the inital sorting order can be asc or desc. 
 * 												Default value: "asc"
 * 
 * @option String sortMultisortKey (optional) 	A string of the multi-column sort key. 
 * 												Default value: "shiftKey"
 * 
 * @option String textExtraction (optional) 	A string of the text-extraction method to use. 
 * 												For complex html structures inside td cell set this option to "complex", 
 * 												on large tables the complex option can be slow. 
 * 												Default value: "simple"
 * 
 * @option Object headers (optional) 			An array containing the forces sorting rules. 
 * 												This option let's you specify a default sorting rule. 
 * 												Default value: null
 * 
 * @option Array sortList (optional) 			An array containing the forces sorting rules. 
 * 												This option let's you specify a default sorting rule. 
 * 												Default value: null
 * 
 * @option Array sortForce (optional) 			An array containing forced sorting rules. 
 * 												This option let's you specify a default sorting rule, which is prepended to user-selected rules.
 * 												Default value: null
 *  
  * @option Array sortAppend (optional) 			An array containing forced sorting rules. 
 * 												This option let's you specify a default sorting rule, which is appended to user-selected rules.
 * 												Default value: null
 * 
 * @option Boolean widthFixed (optional) 		Boolean flag indicating if tablesorter should apply fixed widths to the table columns.
 * 												This is usefull when using the pager companion plugin.
 * 												This options requires the dimension jquery plugin.
 * 												Default value: false
 *
 * @option Boolean cancelSelection (optional) 	Boolean flag indicating if tablesorter should cancel selection of the table headers text.
 * 												Default value: true
 *
 * @option Boolean debug (optional) 			Boolean flag indicating if tablesorter should display debuging information usefull for development.
 *
 * @type jQuery
 *
 * @name tablesorter
 * 
 * @cat Plugins/Tablesorter
 * 
 * @author Christian Bach/christian.bach@polyester.se
 */

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

			var parsers = [], widgets = [];

			this.defaults = {
				cssHeader: "header",
				cssAsc: "headerSortUp",
				cssDesc: "headerSortDown",
				sortInitialOrder: "asc",
				sortMultiSortKey: "shiftKey",
				sortForce: null,
				sortAppend: null,
				textExtraction: "simple",
				parsers: {},
				widgets: [],
				widgetZebra: { css: ["even", "odd"] },
				headers: {},
				widthFixed: false,
				cancelSelection: true,
				sortList: [],
				headerList: [],
				dateFormat: "us",
				decimal: '.',
				debug: false
			};

			/* debuging utils */
			function benchmark(s, d) {
				log(s + "," + (new Date().getTime() - d.getTime()) + "ms");
			}

			this.benchmark = benchmark;

			function log(s) {
				if (typeof console != "undefined" && typeof console.debug != "undefined") {
					console.log(s);
				} else {
					alert(s);
				}
			}

			/* parsers utils */
			function buildParserCache(table, $headers) {

				if (table.config.debug) { var parsersDebug = ""; }

				var rows = table.tBodies[0].rows;

				if (table.tBodies[0].rows[0]) {

					var list = [], cells = rows[0].cells, l = cells.length;

					for (var i = 0; i < l; i++) {
						var p = false;

						if ($.metadata && ($($headers[i]).metadata() && $($headers[i]).metadata().sorter)) {

							p = getParserById($($headers[i]).metadata().sorter);

						} else if ((table.config.headers[i] && table.config.headers[i].sorter)) {

							p = getParserById(table.config.headers[i].sorter);
						}
						if (!p) {
							var text = $.trim(getElementText(table.config, cells[i]));
							if (text == '') {
								// Check rest of column
								for (var rx = 0; rx < rows.length; rx++) {
									text = $.trim(getElementText(table.config, rows[rx].cells[i]));
									if (text != '') { break; }
								}
							}
							p = detectParserForColumn(table, cells[i], text);
						}

						if (table.config.debug) { parsersDebug += "column:" + i + " parser:" + p.id + "\n"; }

						list.push(p);
					}
				}

				if (table.config.debug) { log(parsersDebug); }

				return list;
			};

			function detectParserForColumn(table, node, text) {
				var l = parsers.length;
				for (var i = 1; i < l; i++) {
					if (parsers[i].is(text, table, node)) {
						return parsers[i];
					}
				}
				// 0 is always the generic parser (text)
				return parsers[0];
			}

			function getParserById(name) {
				var l = parsers.length;
				for (var i = 0; i < l; i++) {
					if (parsers[i].id.toLowerCase() == name.toLowerCase()) {
						return parsers[i];
					}
				}
				return false;
			}

			/* utils */
			function buildCache(table) {

				if (table.config.debug) { var cacheTime = new Date(); }


				var totalRows = (table.tBodies[0] && table.tBodies[0].rows.length) || 0,
					totalCells = (table.tBodies[0].rows[0] && table.tBodies[0].rows[0].cells.length) || 0,
					parsers = table.config.parsers,
					cache = { row: [], normalized: [] };

				for (var i = 0; i < totalRows; ++i) {

					/** Add the table data to main data array */
					var c = table.tBodies[0].rows[i], cols = [];

					cache.row.push($(c));

					for (var j = 0; j < totalCells; ++j) {
						cols.push(parsers[j].format(getElementText(table.config, c.cells[j]), table, c.cells[j]));
					}

					cols.push(i); // add position for rowCache
					cache.normalized.push(cols);
					cols = null;
				};

				if (table.config.debug) { benchmark("Building cache for " + totalRows + " rows:", cacheTime); }

				return cache;
			};

			function getElementText(config, node) {

				if (!node) return "";

				var t = "";

				if (config.textExtraction == "simple") {
					if (node.childNodes[0] && node.childNodes[0].hasChildNodes()) {
						t = node.childNodes[0].innerHTML;
					} else {
						t = node.innerHTML;
					}
				} else {
					if (typeof (config.textExtraction) == "function") {
						t = config.textExtraction(node);
					} else {
						t = $(node).text();
					}
				}
				return t;
			}

			function appendToTable(table, cache) {

				if (table.config.debug) { var appendTime = new Date() }

				var c = cache,
					r = c.row,
					n = c.normalized,
					totalRows = n.length,
					checkCell = (n[0].length - 1),
					tableBody = $(table.tBodies[0]),
					rows = [];

				for (var i = 0; i < totalRows; i++) {
					rows.push(r[n[i][checkCell]]);
					if (!table.config.appender) {

						var o = r[n[i][checkCell]];
						var l = o.length;
						for (var j = 0; j < l; j++) {

							tableBody[0].appendChild(o[j]);

						}

						//tableBody.append(r[n[i][checkCell]]);
					}
				}

				if (table.config.appender) {

					table.config.appender(table, rows);
				}

				rows = null;

				if (table.config.debug) { benchmark("Rebuilt table:", appendTime); }

				//apply table widgets
				applyWidget(table);

				// trigger sortend
				setTimeout(function() {
					$(table).trigger("sortEnd");
				}, 0);

			};

			function buildHeaders(table) {

				if (table.config.debug) { var time = new Date(); }

				var meta = ($.metadata) ? true : false, tableHeadersRows = [];

				for (var i = 0; i < table.tHead.rows.length; i++) { tableHeadersRows[i] = 0; };

				$tableHeaders = $("thead th", table);

				$tableHeaders.each(function(index) {

					this.count = 0;
					this.column = index;
					this.order = formatSortingOrder(table.config.sortInitialOrder);

					if (checkHeaderMetadata(this) || checkHeaderOptions(table, index)) this.sortDisabled = true;

					if (!this.sortDisabled) {
						$(this).addClass(table.config.cssHeader);
					}

					// add cell to headerList
					table.config.headerList[index] = this;
				});

				if (table.config.debug) { benchmark("Built headers:", time); log($tableHeaders); }

				return $tableHeaders;

			};

			function checkCellColSpan(table, rows, row) {
				var arr = [], r = table.tHead.rows, c = r[row].cells;

				for (var i = 0; i < c.length; i++) {
					var cell = c[i];

					if (cell.colSpan > 1) {
						arr = arr.concat(checkCellColSpan(table, headerArr, row++));
					} else {
						if (table.tHead.length == 1 || (cell.rowSpan > 1 || !r[row + 1])) {
							arr.push(cell);
						}
						//headerArr[row] = (i+row);
					}
				}
				return arr;
			};

			function checkHeaderMetadata(cell) {
				if (($.metadata) && ($(cell).metadata().sorter === false)) { return true; };
				return false;
			}

			function checkHeaderOptions(table, i) {
				if ((table.config.headers[i]) && (table.config.headers[i].sorter === false)) { return true; };
				return false;
			}

			function applyWidget(table) {
				var c = table.config.widgets;
				var l = c.length;
				for (var i = 0; i < l; i++) {

					getWidgetById(c[i]).format(table);
				}

			}

			function getWidgetById(name) {
				var l = widgets.length;
				for (var i = 0; i < l; i++) {
					if (widgets[i].id.toLowerCase() == name.toLowerCase()) {
						return widgets[i];
					}
				}
			};

			function formatSortingOrder(v) {

				if (typeof (v) != "Number") {
					i = (v.toLowerCase() == "desc") ? 1 : 0;
				} else {
					i = (v == (0 || 1)) ? v : 0;
				}
				return i;
			}

			function isValueInArray(v, a) {
				var l = a.length;
				for (var i = 0; i < l; i++) {
					if (a[i][0] == v) {
						return true;
					}
				}
				return false;
			}

			function setHeadersCss(table, $headers, list, css) {
				// remove all header information
				$headers.removeClass(css[0]).removeClass(css[1]);

				var h = [];
				$headers.each(function(offset) {
					if (!this.sortDisabled) {
						h[this.column] = $(this);
					}
				});

				var l = list.length;
				for (var i = 0; i < l; i++) {
					h[list[i][0]].addClass(css[list[i][1]]);
				}
			}

			function fixColumnWidth(table, $headers) {
				var c = table.config;
				if (c.widthFixed) {
					var colgroup = $('<colgroup>');
					$("tr:first td", table.tBodies[0]).each(function() {
						colgroup.append($('<col>').css('width', $(this).width()));
					});
					$(table).prepend(colgroup);
				};
			}

			function updateHeaderSortCount(table, sortList) {
				var c = table.config, l = sortList.length;
				for (var i = 0; i < l; i++) {
					var s = sortList[i], o = c.headerList[s[0]];
					o.count = s[1];
					o.count++;
				}
			}

			/* sorting methods */
			function multisort(table, sortList, cache) {

				if (table.config.debug) { var sortTime = new Date(); }

				var dynamicExp = "var sortWrapper = function(a,b) {", l = sortList.length;

				for (var i = 0; i < l; i++) {

					var c = sortList[i][0];
					var order = sortList[i][1];
					var s = (getCachedSortType(table.config.parsers, c) == "text") ? ((order == 0) ? "sortText" : "sortTextDesc") : ((order == 0) ? "sortNumeric" : "sortNumericDesc");

					var e = "e" + i;

					dynamicExp += "var " + e + " = " + s + "(a[" + c + "],b[" + c + "]); ";
					dynamicExp += "if(" + e + ") { return " + e + "; } ";
					dynamicExp += "else { ";
				}

				// if value is the same keep orignal order	
				var orgOrderCol = cache.normalized[0].length - 1;
				dynamicExp += "return a[" + orgOrderCol + "]-b[" + orgOrderCol + "];";

				for (var i = 0; i < l; i++) {
					dynamicExp += "}; ";
				}

				dynamicExp += "return 0; ";
				dynamicExp += "}; ";

				eval(dynamicExp);

				cache.normalized.sort(sortWrapper);

				if (table.config.debug) { benchmark("Sorting on " + sortList.toString() + " and dir " + order + " time:", sortTime); }

				return cache;
			};

			function sortText(a, b) {
				return ((a < b) ? -1 : ((a > b) ? 1 : 0));
			};

			function sortTextDesc(a, b) {
				return ((b < a) ? -1 : ((b > a) ? 1 : 0));
			};

			function sortNumeric(a, b) {
				return a - b;
			};

			function sortNumericDesc(a, b) {
				return b - a;
			};

			function getCachedSortType(parsers, i) {
				return parsers[i].type;
			};

			/* public methods */
			this.construct = function(settings) {

				return this.each(function() {

					if (!this.tHead || !this.tBodies) return;

					var $this, $document, $headers, cache, config, shiftDown = 0, sortOrder;

					this.config = {};

					config = $.extend(this.config, $.tablesorter.defaults, settings);

					// store common expression for speed					
					$this = $(this);

					// build headers
					$headers = buildHeaders(this);

					// try to auto detect column type, and store in tables config
					this.config.parsers = buildParserCache(this, $headers);


					// build the cache for the tbody cells
					cache = buildCache(this);

					// get the css class names, could be done else where.
					var sortCSS = [config.cssDesc, config.cssAsc];

					// fixate columns if the users supplies the fixedWidth option
					fixColumnWidth(this);

					// apply event handling to headers
					// this is to big, perhaps break it out?
					$headers.click(function(e) {

						$this.trigger("sortStart");

						var totalRows = ($this[0].tBodies[0] && $this[0].tBodies[0].rows.length) || 0;

						if (!this.sortDisabled && totalRows > 0) {


							// store exp, for speed
							var $cell = $(this);

							// get current column index
							var i = this.column;

							// get current column sort order
							this.order = this.count++ % 2;

							// user only whants to sort on one column
							if (!e[config.sortMultiSortKey]) {

								// flush the sort list
								config.sortList = [];

								if (config.sortForce != null) {
									var a = config.sortForce;
									for (var j = 0; j < a.length; j++) {
										if (a[j][0] != i) {
											config.sortList.push(a[j]);
										}
									}
								}

								// add column to sort list
								config.sortList.push([i, this.order]);

								// multi column sorting
							} else {
								// the user has clicked on an all ready sortet column.
								if (isValueInArray(i, config.sortList)) {

									// revers the sorting direction for all tables.
									for (var j = 0; j < config.sortList.length; j++) {
										var s = config.sortList[j], o = config.headerList[s[0]];
										if (s[0] == i) {
											o.count = s[1];
											o.count++;
											s[1] = o.count % 2;
										}
									}
								} else {
									// add column to sort list array
									config.sortList.push([i, this.order]);
								}
							};
							setTimeout(function() {
								//set css for headers
								setHeadersCss($this[0], $headers, config.sortList, sortCSS);
								appendToTable($this[0], multisort($this[0], config.sortList, cache));
							}, 1);
							// stop normal event by returning false
							return false;
						}
						// cancel selection	
					}).mousedown(function() {
						if (config.cancelSelection) {
							this.onselectstart = function() { return false };
							return false;
						}
					});

					// apply easy methods that trigger binded events
					$this.bind("update", function() {

						// rebuild parsers.
						this.config.parsers = buildParserCache(this, $headers);

						// rebuild the cache map
						cache = buildCache(this);

					}).bind("sorton", function(e, list) {

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

						config.sortList = list;

						// update and store the sortlist
						var sortList = config.sortList;

						// update header count index
						updateHeaderSortCount(this, sortList);

						//set css for headers
						setHeadersCss(this, $headers, sortList, sortCSS);


						// sort the table and append it to the dom
						appendToTable(this, multisort(this, sortList, cache));

					}).bind("appendCache", function() {

						appendToTable(this, cache);

					}).bind("applyWidgetId", function(e, id) {

						getWidgetById(id).format(this);

					}).bind("applyWidgets", function() {
						// apply widgets
						applyWidget(this);
					});

					if ($.metadata && ($(this).metadata() && $(this).metadata().sortlist)) {
						config.sortList = $(this).metadata().sortlist;
					}
					// if user has supplied a sort list to constructor.
					if (config.sortList.length > 0) {
						$this.trigger("sorton", [config.sortList]);
					}

					// apply widgets
					applyWidget(this);
				});
			};

			this.addParser = function(parser) {
				var l = parsers.length, a = true;
				for (var i = 0; i < l; i++) {
					if (parsers[i].id.toLowerCase() == parser.id.toLowerCase()) {
						a = false;
					}
				}
				if (a) { parsers.push(parser); };
			};

			this.addWidget = function(widget) {
				widgets.push(widget);
			};

			this.formatFloat = function(s) {
				var i = parseFloat(s);
				return (isNaN(i)) ? 0 : i;
			};
			this.formatInt = function(s) {
				var i = parseInt(s);
				return (isNaN(i)) ? 0 : i;
			};

			this.isDigit = function(s, config) {
				var DECIMAL = '\\' + config.decimal;
				var exp = '/(^[+]?0(' + DECIMAL + '0+)?$)|(^([-+]?[1-9][0-9]*)$)|(^([-+]?((0?|[1-9][0-9]*)' + DECIMAL + '(0*[1-9][0-9]*)))$)|(^[-+]?[1-9]+[0-9]*' + DECIMAL + '0+$)/';
				return RegExp(exp).test($.trim(s));
			};

			this.clearTableBody = function(table) {
				if ($.browser.msie) {
					function empty() {
						while (this.firstChild) this.removeChild(this.firstChild);
					}
					empty.apply(table.tBodies[0]);
				} else {
					table.tBodies[0].innerHTML = "";
				}
			};
		}
	});

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

	var ts = $.tablesorter;

	// add default parsers
	ts.addParser({
		id: "text",
		is: function(s) {
			return true;
		},
		format: function(s) {
			return $.trim(s.toLowerCase());
		},
		type: "text"
	});

	ts.addParser({
		id: "digit",
		is: function(s, table) {
			var c = table.config;
			return $.tablesorter.isDigit(s, c);
		},
		format: function(s) {
			return $.tablesorter.formatFloat(s);
		},
		type: "numeric"
	});

	ts.addParser({
		id: "currency",
		is: function(s) {
			return new RegExp(/^[£$€?.]/).test(s);
		},
		format: function(s) {
			return $.tablesorter.formatFloat(s.replace(new RegExp(/[^0-9.]/g), ""));
		},
		type: "numeric"
	});

	ts.addParser({
		id: "ipAddress",
		is: function(s) {
			return new RegExp(/^\d{2,3}[\.]\d{2,3}[\.]\d{2,3}[\.]\d{2,3}$/).test(s);
		},
		format: function(s) {
			var a = s.split("."), r = "", l = a.length;
			for (var i = 0; i < l; i++) {
				var item = a[i];
				if (item.length == 2) {
					r += "0" + item;
				} else {
					r += item;
				}
			}
			return $.tablesorter.formatFloat(r);
		},
		type: "numeric"
	});

	ts.addParser({
		id: "url",
		is: function(s) {
			return new RegExp(/^(https?|ftp|file):\/\/$/).test(s);
		},
		format: function(s) {
			return jQuery.trim(s.replace(new RegExp(/(https?|ftp|file):\/\//), ''));
		},
		type: "text"
	});

	ts.addParser({
		id: "isoDate",
		is: function(s) {
			return new RegExp(/^\d{4}[\/-]\d{1,2}[\/-]\d{1,2}$/).test(s);
		},
		format: function(s) {
			return $.tablesorter.formatFloat((s != "") ? new Date(s.replace(new RegExp(/-/g), "/")).getTime() : "0");
		},
		type: "numeric"
	});

	ts.addParser({
		id: "percent",
		is: function(s) {
			return new RegExp(/\%$/).test($.trim(s));
		},
		format: function(s) {
			return $.tablesorter.formatFloat(s.replace(new RegExp(/%/g), ""));
		},
		type: "numeric"
	});

	ts.addParser({
		id: "usLongDate",
		is: function(s) {
			return s.match(new RegExp(/^[A-Za-z]{3,10}\.? [0-9]{1,2}, ([0-9]{4}|'?[0-9]{2}) (([0-2]?[0-9]:[0-5][0-9])|([0-1]?[0-9]:[0-5][0-9]\s(AM|PM)))$/));
		},
		format: function(s) {
			return $.tablesorter.formatFloat(new Date(s).getTime());
		},
		type: "numeric"
	});

	if ($.browser.msie) {
		ts.addParser({
			id: "midDate",
			is: function(s) {
				return new RegExp(/\d{1,2} [A-Z][a-z]{2} \d{2,4}/).test(s);
			},
			format: function(s, table) {
				if (s != '') {
					var c = table.config;
					s = s.replace('Expired ', '');
					s = s.replace(/<[a-zA-Z\/][^>]*>/g, "");
					var m = /(\d{1,2}) ([A-Z][a-z]{2}) (\d{2,4})/.exec(s);
					if (m != null) {
						var mth = m[2].replace('Jan', 1).replace('Feb', 2).replace('Mar', 3).replace('Apr', 4).replace('May', 5).replace('Jun', 6)
					.replace('Jul', 7).replace('Aug', 8).replace('Sep', 9).replace('Oct', 10).replace('Nov', 11).replace('Dec', 12);
						var d = new Date(m[3], mth, m[1], 0, 0, 0, 0);
						return $.tablesorter.formatFloat(d.getTime());
					}
				}
				return $.tablesorter.formatFloat(0);
			},
			type: "numeric"
		});
	} else {
		ts.addParser({
			id: "midDate",
			is: function(s) {
				return new RegExp(/\d{1,2} [A-Z][a-z]{2} \d{2,4}/).test(s);
			},
			format: function(s, table) {
				if (s == '') {
					return $.tablesorter.formatFloat(0);
				} else {
					var c = table.config;
					s = s.replace('Expired ', '');
					s = s.replace(/<[a-zA-Z\/][^>]*>/g, "");
					if (c.dateFormat == "us") {
						// reformat the string in ISO format
						s = s.replace(/(\d{1,2}) ([A-Z][a-z]{2}) (\d{2,4})/, "$3/$1/$2");
					} else if (c.dateFormat == "uk") {
						//reformat the string in ISO format
						s = s.replace(/(\d{1,2}) ([A-Z][a-z]{2}) (\d{2,4})/, "$3/$2/$1");
					} else if (c.dateFormat == "dd/mm/yy" || c.dateFormat == "dd-mm-yy") {
						s = s.replace(/(\d{1,2}) ([A-Z][a-z]{2}) (\d{2,4})/, "$1/$2/$3");
					}
					return $.tablesorter.formatFloat(new Date(s).getTime());
				}
			},
			type: "numeric"
		});
	}

	ts.addParser({
		id: "shortDate",
		is: function(s) {
			return new RegExp(/\d{1,2}[\/\-]\d{1,2}[\/\-]\d{2,4}/).test(s);
		},
		format: function(s, table) {
			if (s == '') {
				return $.tablesorter.formatFloat(0);
			} else {
				var c = table.config;
				s = s.replace(/\-/g, "/");
				if (c.dateFormat == "us") {
					// reformat the string in ISO format
					s = s.replace(/(\d{1,2})[\/\-](\d{1,2})[\/\-](\d{4})/, "$3/$1/$2");
				} else if (c.dateFormat == "uk") {
					//reformat the string in ISO format
					s = s.replace(/(\d{1,2})[\/\-](\d{1,2})[\/\-](\d{4})/, "$3/$2/$1");
				} else if (c.dateFormat == "dd/mm/yy" || c.dateFormat == "dd-mm-yy") {
					s = s.replace(/(\d{1,2})[\/\-](\d{1,2})[\/\-](\d{2})/, "$1/$2/$3");
				}
				return $.tablesorter.formatFloat(new Date(s).getTime());
			}
		},
		type: "numeric"
	});

	ts.addParser({
		id: "time",
		is: function(s) {
			return new RegExp(/^(([0-2]?[0-9]:[0-5][0-9])|([0-1]?[0-9]:[0-5][0-9]\s(am|pm)))$/).test(s);
		},
		format: function(s) {
			return $.tablesorter.formatFloat(new Date("2000/01/01 " + s).getTime());
		},
		type: "numeric"
	});


	ts.addParser({
		id: "metadata",
		is: function(s) {
			return false;
		},
		format: function(s, table, cell) {
			var c = table.config, p = (!c.parserMetadataName) ? 'sortValue' : c.parserMetadataName;
			return $(cell).metadata()[p];
		},
		type: "numeric"
	});

	// add default widgets
	ts.addWidget({
		id: "zebra",
		format: function(table) {
			if (table.config.debug) { var time = new Date(); }
			$("tr:visible", table.tBodies[0])
	        .filter(':even')
	        .removeClass(table.config.widgetZebra.css[1]).addClass(table.config.widgetZebra.css[0])
	        .end().filter(':odd')
	        .removeClass(table.config.widgetZebra.css[0]).addClass(table.config.widgetZebra.css[1]);
			if (table.config.debug) { $.tablesorter.benchmark("Applying Zebra widget", time); }
		}
	});
})(jQuery);