/*
 * jQuery Address Plugin v1.2.2
 * http://www.asual.com/jquery/address/
 *
 * Copyright (c) 2009-2010 Rostislav Hristov
 * Dual licensed under the MIT or GPL Version 2 licenses.
 * http://jquery.org/license
 *
 * Date: 2010-07-19 11:12:48 +0300 (Mon, 19 Jul 2010)
 */
(function ($) {

	$.address = (function () {
		var _trigger = function(name) {
				$($.address).trigger(
					$.extend($.Event(name), 
						(function() {
							var parameters = {},
								parameterNames = $.address.parameterNames();
							for (var i = 0, l = parameterNames.length; i < l; i++) {
								parameters[parameterNames[i]] = $.address.parameter(parameterNames[i]);
							}
							return {
								value: $.address.value(),
								path: $.address.path(),
								pathNames: $.address.pathNames(),
								parameterNames: parameterNames,
								parameters: parameters,
								queryString: $.address.queryString()
							};
						}).call($.address)
					)
				);
			},
			_bind = function(value, data, fn) {
				$($.address).bind(value, data, fn);
				return $.address;
			},
			_hash = function() {
				var index = _l.href.indexOf('#');
				return index != -1 ? _ec(_dc(_crawl(_l.href.substr(index + 1), FALSE))) : '';
			},
			_window = function() {
				try {
					return top.document !== undefined ? top : window;
				} catch (e) { 
					return window;
				}
			},
			_js = function() {
				return 'javascript';
			},
			_strict = function(value, force) {
				if (_opts.strict) {
					value = force ? (value.substr(0, 1) != '/' ? '/' + value : value) : (value == '' ? '/' : value);
				}
				return value;
			},
			_local = function(value, direction) {
				return (_msie && _l.protocol == 'file:') ? 
					(direction ? _value.replace(/\?/, '%3F') : _value.replace(/%253F/, '?')) : value;
			},
			_crawl = function(value, direction) {
				if (_opts.crawlable && direction) {
					return (value != '' ? '!' : '') + value;
				}
				return value.replace(/^\!/, '');
			},
			_cssint = function(el, value) {
				return parseInt(el.css(value), 10);
			},
			_search = function(el) {
				var url, s;
				for (var i = 0, l = el.childNodes.length; i < l; i++) {
					if (el.childNodes[i].src) {
						url = String(el.childNodes[i].src);
					}
					s = _search(el.childNodes[i]);
					if (s) {
						url = s;
					}
				}
				return url;
			},
			_listen = function() {
				if (!_silent) {
					var hash = _hash(),
						diff = _value != hash;
					if (_safari && _version < 523) {
						if (_length != _h.length) {
							_length = _h.length;
							if (typeof _stack[_length - 1] != UNDEFINED) {
								_value = _stack[_length - 1];
							}
							_update(FALSE);
						}
					} else if (_msie && _version < 7 && diff) {
						_l.reload();
					} else if (diff) {
						_value = hash;
						_update(FALSE);
					}
				}
			},
			_update = function(internal) {
				_trigger(CHANGE);
				_trigger(internal ? INTERNAL_CHANGE : EXTERNAL_CHANGE);
				_st(_track, 10);
			},
			_track = function() {
				if (_opts.tracker !== 'null' && _opts.tracker !== null) {
					var fn = _t[_opts.tracker],
						value = (_l.pathname + ($.address ? $.address.value() : ''))
							.replace(/\/\//, '/').replace(/^\/$/, '');
					if (typeof fn == FUNCTION) {
						fn(value);
					} else if (typeof urchinTracker == FUNCTION) {
						urchinTracker(value);
					} else if (typeof pageTracker != UNDEFINED && typeof pageTracker._trackPageview == FUNCTION) {
						pageTracker._trackPageview(value);
					} else if (typeof _gaq != UNDEFINED && typeof _gaq.push == FUNCTION) {
						_gaq.push(['_trackPageview', value]);
					}
				}
			},
			_html = function() {
				var doc = _frame.contentWindow.document;
				doc.open();
				doc.write('<html><head><title>' + _d.title + '</title><script>var ' + ID + ' = "' + _hash() + '";</' + 'script></head></html>');
				doc.close();
			},
			_options = function() {
				if (_url && _qi != -1) {
					var param, params = _url.substr(_qi + 1).split('&');
					for (i = 0; i < params.length; i++) {
						param = params[i].split('=');
						if (/^(autoUpdate|crawlable|history|strict|wrap)$/.test(param[0])) {
							_opts[param[0]] = (isNaN(param[1]) ? /^(true|yes)$/i.test(param[1]) : (parseInt(param[1], 10) !== 0));
						}
						if (/^tracker$/.test(param[0])) {
							_opts[param[0]] = param[1];
						}
					}
					_url = null;
				}
			},
			_load = function() {
				if (!_loaded) {
					_loaded = TRUE;
					_options();
					var body = $('body').ajaxComplete(function() {
						_enable.call(this);
						_unescape.call(this);
					}).trigger('ajaxComplete');
					if (_opts.wrap) {
						var wrap = $('body > *')
							.wrapAll('<div style="padding:' + 
								(_cssint(body, 'marginTop') + _cssint(body, 'paddingTop')) + 'px ' + 
								(_cssint(body, 'marginRight') + _cssint(body, 'paddingRight')) + 'px ' + 
								(_cssint(body, 'marginBottom') + _cssint(body, 'paddingBottom')) + 'px ' + 
								(_cssint(body, 'marginLeft') + _cssint(body, 'paddingLeft')) + 'px;" />')
							.parent()
							.wrap('<div id="' + ID + '" style="height:100%; overflow:auto;' + 
								(_safari ? (window.statusbar.visible && !/chrome/i.test(_agent) ? '' : ' resize:both;') : '') + '" />');
						$('html, body')
							.css({
								height: '100%',
								margin: 0,
								padding: 0,
								overflow: 'hidden'
							});
						if (_safari) {
							$('<style type="text/css" />')
								.appendTo('head')
								.text('#' + ID + '::-webkit-resizer { background-color: #fff; }');
						}
					}
					if (_msie && _version < 8) {
						var frameset = _d.getElementsByTagName('frameset')[0];
						_frame = _d.createElement((frameset ? '' : 'i') + 'frame');
						if (frameset) {
							frameset.insertAdjacentElement('beforeEnd', _frame);
							frameset[frameset.cols ? 'cols' : 'rows'] += ',0';
							_frame.src = _js() + ':' + FALSE;
							_frame.noResize = TRUE;
							_frame.frameBorder = _frame.frameSpacing = 0;
						} else {
							_frame.src = _js() + ':' + FALSE;
							_frame.style.display = 'none';
							_d.body.insertAdjacentElement('afterBegin', _frame);
						}
						_st(function() {
							$(_frame).bind('load', function() {
								var win = _frame.contentWindow;
								var src = win.location.href;
								_value = (typeof win[ID] != UNDEFINED ? win[ID] : '');
								if (_value != _hash()) {
									_update(FALSE);
									_l.hash = _local(_crawl(_value, TRUE), TRUE);
								}
							});
							if (typeof _frame.contentWindow[ID] == UNDEFINED) {
								_html();
							}
						}, 50);
					} else if (_safari) {
						if (_version < 418) {
							$(_d.body).append('<form id="' + ID + '" style="position:absolute;top:-9999px;" method="get"></form>');
							_form = _d.getElementById(ID);
						}
						if (typeof _l[ID] == UNDEFINED) {
							_l[ID] = {};
						}
						if (typeof _l[ID][_l.pathname] != UNDEFINED) {
							_stack = _l[ID][_l.pathname].split(',');
						}
					}

					_st(function() {
						_trigger('init');
						_update(FALSE);
					}, 1);
					
					if ((_msie && _version > 7) || (!_msie && ('on' + HASH_CHANGE) in _t)) {
						if (_t.addEventListener) {
							_t.addEventListener(HASH_CHANGE, _listen, false);
						} else if (_t.attachEvent) {
							_t.attachEvent('on' + HASH_CHANGE, _listen);
						}
					} else {
						_si(_listen, 50);
					}
					
					_enable();
				}
			},
			_enable = function() {
				$('a').filter('[rel*=address:]').address();
			},
			_unload = function() {
				if (_t.removeEventListener) {
					_t.removeEventListener(HASH_CHANGE, _listen, false);
				} else if (_t.detachEvent) {
					_t.detachEvent('on' + HASH_CHANGE, _listen);
				}
			},
			_unescape = function() {
				var base = _l.pathname.replace(/\/$/, ''),
					fragment = '_escaped_fragment_';
				if ($('body').html().indexOf(fragment) != -1) {
					$('a[href]:not([href^=http]), , a[href*=' + document.domain + ']', this).each(function() {
						var href = $(this).attr('href').replace(/^http:/, '').replace(new RegExp(base + '/?$'), '');
						if (href == '' || href.indexOf(fragment) != -1) {
							$(this).attr('href', '#' + decodeURIComponent(href.replace(new RegExp('/(.*)\\?' + fragment + '=(.*)$'), '!$2')));
						}
					});
				}
			},
			ID = 'jQueryAddress',
			FUNCTION = 'function',
			UNDEFINED = 'undefined',
			HASH_CHANGE = 'hashchange',
			INIT = 'init',
			CHANGE = 'change',
			INTERNAL_CHANGE = 'internalChange',
			EXTERNAL_CHANGE = 'externalChange',
			TRUE = true,
			FALSE = false,
			_opts = {
				autoUpdate: TRUE, 
				crawlable: FALSE,
				history: TRUE, 
				strict: TRUE,
				wrap: FALSE
			},
			_browser = $.browser, 
			_version = parseFloat($.browser.version),
			_mozilla = _browser.mozilla,
			_msie = _browser.msie,
			_opera = _browser.opera,
			_safari = _browser.safari,
			_supported = FALSE,
			_t = _window(),
			_d = _t.document,
			_h = _t.history, 
			_l = _t.location,
			_si = setInterval,
			_st = setTimeout, 
			_dc = decodeURI,
			_ec = encodeURI,
			_agent = navigator.userAgent,
			_frame,
			_form,
			_url = _search(document),
			_qi = _url ? _url.indexOf('?') : -1,
			_title = _d.title, 
			_length = _h.length, 
			_silent = FALSE,
			_loaded = FALSE,
			_justset = TRUE,
			_juststart = TRUE,
			_updating = FALSE,
			_stack = [], 
			_listeners = {}, 
			_value = _hash();
			
		if (_msie) {
			_version = parseFloat(_agent.substr(_agent.indexOf('MSIE') + 4));
			if (_d.documentMode && _d.documentMode != _version) {
				_version = _d.documentMode != 8 ? 7 : 8;
			}
			$(document).bind('propertychange', function() {
				if (_d.title != _title && _d.title.indexOf('#' + _hash()) != -1) {
					_d.title = _title;
				}
			});
		}
		
		_supported = 
			(_mozilla && _version >= 1) || 
			(_msie && _version >= 6) ||
			(_opera && _version >= 9.5) ||
			(_safari && _version >= 312);
			
		if (_supported) {
		
			for (var i = 1; i < _length; i++) {
				_stack.push('');
			}
			
			_stack.push(_value);
			
			if (_opera) {
				history.navigationMode = 'compatible'; 
			}
			
			if (document.readyState == 'complete') {
				var interval = setInterval(function() {
					if ($.address) {
						_load();
						clearInterval(interval);
					}
				}, 50);
			} else {
				_options();
				$(_load);
			}
			
			if (_msie && _l.hash != _value) {
				_l.hash = '#' + _local(_crawl(_value, TRUE), TRUE);
			}
			
			$(window).bind('unload', _unload);
			
		} else if ((!_supported && _hash() != '') || 
			(_safari && _version < 418 && _hash() != '' && _l.search != '')) {
			_d.open();
			_d.write('<html><head><meta http-equiv="refresh" content="0;url=' + 
				encodeURI(_l.href.substr(0, _l.href.indexOf('#'))) + '" /></head></html>');
			_d.close();
		} else {
			_track();
		}

		return {
			bind: function(type, data, fn) {
				return _bind(type, data, fn);
			},
			init: function(fn) {
				return _bind(INIT, fn);
			},
			change: function(fn) {
				return _bind(CHANGE, fn);
			},
			internalChange: function(fn) {
				return _bind(INTERNAL_CHANGE, fn);
			},
			externalChange: function(fn) {
				return _bind(EXTERNAL_CHANGE, fn);
			},
			baseURL: function() {
				var url = _l.href;
				if (url.indexOf('#') != -1) {
					url = url.substr(0, url.indexOf('#'));
				}
				if (/\/$/.test(url)) {
					url = url.substr(0, url.length - 1);
				}
				return url;
			},
			autoUpdate: function(value) {
				if (value !== undefined) {
					_opts.autoUpdate = value;
					return this;
				}
				return _opts.autoUpdate;
			},
			crawlable: function(value) {
				if (value !== undefined) {
					_opts.crawlable = value;
					return this;
				}
				return _opts.crawlable;
			},
			history: function(value) {
				if (value !== undefined) {
					_opts.history = value;
					return this;
				}
				return _opts.history;
			},
			strict: function(value) {
				if (value !== undefined) {
					_opts.strict = value;
					return this;
				}
				return _opts.strict;
			},
			tracker: function(value) {
				if (value !== undefined) {
					_opts.tracker = value;
					return this;
				}
				return _opts.tracker;
			},
			wrap: function(value) {
				if (value !== undefined) {
					_opts.wrap = value;
					return this;
				}
				return _opts.wrap;
			},
			update: function() {
				_updating = TRUE;
				this.value(_value);
				_updating = FALSE;
				return this;
			},
			title: function(value) {
				if (value !== undefined) {
					value = _dc(value);
					_st(function() {
						_title = _d.title = value;
						if (_juststart && _frame && _frame.contentWindow && _frame.contentWindow.document) {
							_frame.contentWindow.document.title = value;
							_juststart = FALSE;
						}
						if (!_justset && _mozilla) {
							_l.replace(_l.href.indexOf('#') != -1 ? _l.href : _l.href + '#');
						}
						_justset = FALSE;
					}, 50);
					return this;
				}
				return _d.title;
			},
			value: function(value) {
				if (value !== undefined) {
					value = _ec(_dc(_strict(value, TRUE)));
					if (value == '/') {
						value = '';
					}
					if (_value == value && !_updating) {
						return;
					}
					_justset = TRUE;
					_value = value;
					if (_opts.autoUpdate || _updating) {
						_silent = TRUE;
						_update(TRUE);
						_stack[_h.length] = _value;
						if (_safari) {
							if (_opts.history) {
								_l[ID][_l.pathname] = _stack.toString();
								_length = _h.length + 1;
								if (_version < 418) {
									if (_l.search == '') {
										_form.action = '#' + _crawl(_value, TRUE);
										_form.submit();
									}
								} else if (_version < 523 || _value == '') {
									var evt = _d.createEvent('MouseEvents');
									evt.initEvent('click', TRUE, TRUE);
									var anchor = _d.createElement('a');
									anchor.href = '#' + _crawl(_value, TRUE);
									anchor.dispatchEvent(evt);
								} else {
									_l.hash = '#' + _crawl(_value, TRUE);
								}
							} else {
								_l.replace('#' + _crawl(_value, TRUE));
							}
						} else if (_value != _hash()) {
							if (_opts.history) {
								_l.hash = '#' + _local(_crawl(_value, TRUE), TRUE);
							} else {
								_l.replace('#' + _crawl(_value, TRUE));
							}
						}
						if ((_msie && _version < 8) && _opts.history) {
							_st(_html, 50);
						}
						if (_safari) {
							_st(function(){ _silent = FALSE; }, 1);
						} else {
							_silent = FALSE;
						}
					}
					return this;
				}
				if (!_supported) {
					return null;
				}
				return _dc(_strict(_local(_value, FALSE), FALSE));
			},
			path: function(value) {
				if (value !== undefined) {
					var qs = this.queryString(),
						hash = this.hash();
					this.value(value + (qs ? '?' + qs : '') + (hash ? '#' + hash : ''));
					return this;
				}
				return this.value().split('#')[0].split('?')[0];
			},
			queryString: function(value) {
				if (value !== undefined) {
					var hash = this.hash();
					this.value(this.path() + (value ? '?' + value : '') + (hash ? '#' + hash : ''));
					return this;
				}
				var arr = this.value().split('?');
				return arr.slice(1, arr.length).join('?').split('#')[0];
			},
			parameter: function(name, value, append) {
				var i, params;
				if (value !== undefined) {
					var names = this.parameterNames();
					params = [];
					for (i = 0; i < names.length; i++) {
						var n = names[i],
							v = this.parameter(n);
						if (typeof v == 'string') {
							v = [v];
						}
						if (n == name) {
							v = (value === null || value === '') ? [] : 
								(append ? v.concat([value]) : [value]);
						}
						for (var j = 0; j < v.length; j++) {
							params.push(n + '=' + v[j]);
						}
					}
					if ($.inArray(name, names) == -1 && value !== null && value !== '') {
						params.push(name + '=' + value);
					}
					this.queryString(params.join('&'));
					return this;
				}
				value = this.queryString();
				if (value) {
					params = value.split('&');
					var r = [];
					for (i = 0; i < params.length; i++) {
						var p = params[i].split('=');
						if (p[0] == name) {
							r.push(p[1]);
						}
					}
					if (r.length !== 0) {
						return r.length != 1 ? r : r[0];
					}
				}
			},
			pathNames: function() {
				var path = this.path(),
					names = path.replace(/\/{2,9}/g, '/').split('/');
				if (path.substr(0, 1) == '/' || path.length === 0) {
					names.splice(0, 1);
				}
				if (path.substr(path.length - 1, 1) == '/') {
					names.splice(names.length - 1, 1);
				}
				return names;
			},
			parameterNames: function() {
				var qs = this.queryString(),
					names = [];
				if (qs && qs.indexOf('=') != -1) {
					var params = qs.split('&');
					for (var i = 0; i < params.length; i++) {
						var name = params[i].split('=')[0];
						if ($.inArray(name, names) == -1) {
							names.push(name);
						}
					}
				}
				return names;
			},
			hash: function(value) {
				if (value !== undefined) {
					this.value(this.value().split('#')[0] + (value ? '#' + value : ''));
					return this;
				}
				var arr = this.value().split('#');
				return arr.slice(1, arr.length).join('#');
			}
		};
	})();
	
	$.fn.address = function(fn) {
		if (!$(this).attr('address')) {
			var f = function() {
				if ($(this).is('a')) {
					var value = fn ? fn.call(this) : 
						/address:/.test($(this).attr('rel')) ? $(this).attr('rel').split('address:')[1].split(' ')[0] : 
						$(this).attr('href').replace(/^#\!?/, '');
					$.address.value(value);
					return false;
				}
			};
			$(this).click(f).live('click', f).submit(function() {
				if ($(this).is('form')) {
					var value = fn ? fn.call(this) : $(this).attr('action') + '?' + $(this).serialize();
					$.address.value(value);
					return false;
				}
			}).attr('address', true);
		}
		return this;
	};
	
}(jQuery));
