/**
 * SWFAddress 2.1: Deep linking for Flash and Ajax - http://www.asual.com/swfaddress/
 *
 * SWFAddress is (c) 2006-2007 Rostislav Hristov and is released under the MIT License:
 * http://www.opensource.org/licenses/mit-license.php
 *
 */

if (typeof com == "undefined") var com = {};
if (typeof com.asual == "undefined") com.asual = {};
if (typeof com.asual.util == "undefined") com.asual.util = {};
 
/**
 * @class Utility class that provides detailed browser information.
 * @static
 * @ignore
 */
com.asual.util.Browser = new function() {

 var _version = -1;
 var _agent = navigator.userAgent;
 var _ie = false, _camino = false, _safari = false, _opera = false, 
  _firefox = false, _netscape = false, _mozilla = false;

 var _getVersion = function(s, i) {
  return parseFloat(_agent.substr(_agent.indexOf(s) + i));
 }
 
 if (_ie = /MSIE/.test(_agent))
  _version = _getVersion('MSIE', 4);
  
 if (_safari = /AppleWebKit/.test(_agent))
  _version = _getVersion('Safari', 7);
  
 if (_opera = /Opera/.test(_agent))
  _version = parseFloat(navigator.appVersion);
  
 if (_camino = /Camino/.test(_agent))
  _version = _getVersion('Camino', 7);
  
 if (_firefox = /Firefox/.test(_agent))
  _version = _getVersion('Firefox', 8);
  
 if (_netscape = /Netscape/.test(_agent))
  _version = _getVersion('Netscape', 9);
  
 if (_mozilla = /Mozilla/.test(_agent) && /rv:/.test(_agent))
  _version = _getVersion('rv:', 3);


 /**
  * Detects the version of the browser.
  * @return {Number}
  * @static
  */
 this.getVersion = function() {
  return _version;
 }

 /**
  * Detects if the browser is Internet Explorer.
  * @return {Boolean}
  * @static
  */
 this.isIE = function() {
  return _ie;
 }

 /**
  * Detects if the browser is Safari.
  * @return {Boolean}
  * @static
  */
 this.isSafari = function() {
  return _safari;
 }

 /**
  * Detects if the browser is Opera.
  * @return {Boolean}
  * @static
  */
 this.isOpera = function() {
  return _opera;
 }

 /**
  * Detects if the browser is Camino.
  * @return {Boolean}
  * @static
  */
 this.isCamino = function() {
  return _camino;
 }

 /**
  * Detects if the browser is Firefox.
  * @return {Boolean}
  * @static
  */
 this.isFirefox = function() {
  return _firefox;
 }

 /**
  * Detects if the browser is Netscape.
  * @return {Boolean}
  * @static
  */
 this.isNetscape = function() {
  return _netscape;
 }
  
 /**
  * Detects if the browser is Mozilla.
  * @return {Boolean}
  * @static
  */
 this.isMozilla = function() {
  return _mozilla;
 }
}

/**
 * @class Utility class that provides event helpers.
 * @static
 * @ignore
 */
com.asual.util.Events = new function() {

 var _cache = [];
 var _browser = com.asual.util.Browser;
 var _dcl = 'DOMContentLoaded';

 if (_browser.isIE() || _browser.isSafari()) {
  (function (){
   try {
    if (_browser.isIE() || !/loaded|complete/.test(document.readyState))
     document.documentElement.doScroll('left');
   } catch(e) {
    return setTimeout(arguments.callee, 0);
   }
   for (var i = 0, e; e = _cache[i]; i++)
    if (e.t == _dcl) e.l.call(null);
  })();
 }

 /**
  * Adds an event listener to an object.
  * @param {Object} obj The object that provides events.
  * @param {String} type The type of the event.
  * @param {Function} listener The event listener function.
  * @return {void}
  * @static
  */
 this.addListener = function(obj, type, listener) {
  _cache.push({o: obj, t: type, l: listener});
  if (!(type == _dcl && (_browser.isIE() || _browser.isSafari()))) {
   if (obj.addEventListener)
    obj.addEventListener(type, listener, false);
   else if (obj.attachEvent)
    obj.attachEvent('on' + type, listener);
  }
 }

 /**
  * Removes an event listener from an object.
  * @param {Object} obj The object that provides events.
  * @param {String} type The type of the event.
  * @param {Function} listener The event listener function.
  * @return {void}  
  * @static
  */
 this.removeListener = function(obj, type, listener) {
  for (var i = 0, e; e = _cache[i]; i++) {
   if (e.o == obj && e.t == type && e.l == listener) {
    _cache.splice(i, 1);
    break;
   }
  }
  if (!(type == _dcl && (_browser.isIE() || _browser.isSafari()))) {
   if (obj.removeEventListener)
    obj.removeEventListener(type, listener, false);
   else if (obj.detachEvent)
    obj.detachEvent('on' + type, listener);
  }
 }

 var _unload = function() {
  for (var i = 0, evt; evt = _cache[i]; i++) {
   if (evt.t != _dcl)
    com.asual.util.Events.removeListener(evt.o, evt.t, evt.l);
  }
 }

 this.addListener(window, 'unload', _unload);
}

/**
 * Creates a new SWFAddress event.
 * @class Event class for SWFAddress.
 * @param {String} type Type of the event.
 */
SWFAddressEvent = function(type) {
 
 /**
  * String representation of this object.
  * @ignore
  */
 this.toString = function() {
  return '[object SWFAddressEvent]';
 }

 /**
  * The type of this event.
  * @type String
  */
 this.type = type;

 /**
  * The target of this event.
  * @type Function
  */
 this.target = [SWFAddress][0];

 /**
  * The value of this event.
  * @type String
  */
 this.value = SWFAddress.getValue();

 /**
  * The path of this event.
  * @type String
  */
 this.path = SWFAddress.getPath();
 
 /**
  * The folders in the deep linking path of this event.
  * @type Array
  */
 this.pathNames = SWFAddress.getPathNames();

 /**
  * The parameters of this event.
  * @type Object
  */
 this.parameters = {};

 var _parametersNames = SWFAddress.getParameterNames();
 for (var i = 0, l = _parametersNames.length; i < l; i++)
  this.parameters[_parametersNames[i]] = SWFAddress.getParameter(_parametersNames[i]);
 
 /**
  * The parameters names of this event.
  * @type Array  
  */
  this.parametersNames = _parametersNames;
}

/**
 * Init event.
 * @type String
 * @memberOf SWFAddressEvent
 * @static
 */
SWFAddressEvent.INIT = 'init';

/**
 * Change event.
 * @type String
 * @memberOf SWFAddressEvent
 * @static 
 */
SWFAddressEvent.CHANGE = 'change';

/**
 * @class The SWFAddress class can be configured with query parameters using the following format:
 * swfaddress.js?html=false&history=1&tracker=pageTracker._trackPageview&strict=1.<br /> 
 * The list of supported options include:<br /><br />
 * <code>history:Boolean</code> - Enables or disables the creation of history entries.<br />
 * <code>html:Boolean</code> - Enables or disables the usage of swfaddress.html.<br />
 * <code>strict:Boolean</code> - Enables or disables the strict mode.<br />
 * <code>tracker:String</code> - Sets a function for page view tracking.<br />
 * @static 
 */ 
SWFAddress = new function() {

 var _browser = com.asual.util.Browser;
 var _events = com.asual.util.Events;
 var _version = _browser.getVersion();
 var _supported = false;

 if (_browser.isIE()) 
  _supported = _version >= 6;
  
 if (_browser.isSafari())
  _supported = _version >= 312;
  
 if (_browser.isOpera())
  _supported = _version >= 9.02;
  
 if (_browser.isCamino()) 
  _supported = _version >= 1;
  
 if (_browser.isFirefox())
  _supported = _version >= 1;
  
 if (_browser.isNetscape())
  _supported = _version >= 8;
  
 if (_browser.isMozilla())
  _supported = _version >= 1.8;

 var _t = top;
 var _d = _t.document;
 var _h = _t.history;
 var _l = _t.location;
 var _st = setTimeout;
 
 var FUNCTION = 'function';
 var UNDEFINED = 'undefined';
 var SWFADDRESS = 'swfaddress';

 var _iframe, _form, _url;
 var _title = _d.title;
 var _length = _h.length;
 var _silent = false;
 var _listeners = {};
 var _stack = [];
 var _ids = [];
 
 var _opts = {};
 _opts.history = true;
 _opts.html = false;
 _opts.strict = true;
 _opts.tracker = '_trackDefault';
 
 if ((!_supported && _l.href.indexOf('#') != -1) || 
  (_browser.isSafari() && _version < 412 && _l.href.indexOf('#') != -1 && _l.search != '')){
  _d.open();
  _d.write('<html><head><meta http-equiv="refresh" content="0;url=' + 
   _l.href.substr(0, _l.href.indexOf('#')) + '" /></head></html>');
  _d.close();
 }

 var _getHash = function() {
  var index = _l.href.indexOf('#');
  if (index != -1) {
   var hash = unescape(_l.href.substr(index + 1));
   if (/^[a-z0-9 ,=_&\-\.\?\+\/]*$/i.test(hash))
    return hash;
   else
    _l.replace(_l.href.substr(0, index));
  }
  return '';
 }

 var _value = _getHash();

 var _strictCheck = function(value, force) {
  if (_opts.strict)
   value = force ? (value.substr(0, 1) != '/' ? '/' + value : value) : (value == '' ? '/' : value);
  return value;
 }

 var _ieLocal = function(value) {
  return (_browser.isIE() && _l.protocol == 'file:') ? _value.replace(/\?/, '%3F') : value; 
 }

 var _searchScript = function(el) {
  if (el.src && /swfaddress\.js(\?.*)?$/.test(el.src)) return el;
  for (var i = 0, l = el.childNodes.length, s; i < l; i++)
   if (s = _searchScript(el.childNodes[i])) return s;
 }
 
 var _titleCheck = function() {
  if (_browser.isIE() && _d.title != _title)
   SWFAddress.setTitle(_title);
 }

 var _listen = function() {
  if (!_silent) {
   var hash = _getHash();
   if (_browser.isIE()) {
    if (_value != hash) {
     if (_version < 7)
      _l.reload();
     else
      SWFAddress.setValue(hash);
    }
   } else if (_browser.isSafari() && _version < 523) {
    if (_length != _h.length) {
     _length = _h.length;
     if (typeof _stack[_length - 1] != UNDEFINED)
      _value = _stack[_length - 1];
     _update();
    }
   } else if (_value != hash) {
    _value = hash;
    _update();
   }
   _titleCheck();
  }
 }

 var _jsDispatch = function(type) {
  if (SWFAddress.hasEventListener(type))
   SWFAddress.dispatchEvent(new SWFAddressEvent(type));
  type = type.substr(0, 1).toUpperCase() + type.substr(1);
  if(typeof SWFAddress['on' + type] == FUNCTION)
   SWFAddress['on' + type]();
 }

 var _jsInit = function() {
  _jsDispatch('init');
 }

 var _jsChange = function() {
  _jsDispatch('change');
 }

 var _swfChange = function() {
  for (var i = 0, id, value = SWFAddress.getValue(), setter = 'setSWFAddressValue'; id = _ids[i]; i++) {
   var obj = document.getElementById(id);
   if (obj) {
    if (obj.parentNode && typeof obj.parentNode.so != UNDEFINED) {
     obj.parentNode.so.call(setter, value);
    } else {
     if (!(obj && typeof obj[setter] != UNDEFINED)) {
      var objects = obj.getElementsByTagName('object');
      var embeds = obj.getElementsByTagName('embed');
      obj = ((objects[0] && typeof objects[0][setter] != UNDEFINED) ? 
       objects : ((embeds[0] && typeof embeds[0][setter] != UNDEFINED) ? 
        embeds[0] : null));
     }
     if (obj)
      obj[setter](value);
    } 
   } else if (obj = document[id]) {
    if (typeof obj[setter] != UNDEFINED)
     obj[setter](value);
   }
  }
 }

 var _update = function() {
  _swfChange();
  _jsChange();
  _st(_track, 10);
 }

 var _trackDefault = function(value) {
  if (typeof urchinTracker == FUNCTION) 
   urchinTracker(value);
  if (typeof pageTracker != UNDEFINED && typeof pageTracker._trackPageview == FUNCTION)
   pageTracker._trackPageview(value);
 }
 
 eval('var _trackDefault = ' + _trackDefault + ';');
 
 var _track = function() {
  if (typeof _opts.tracker != UNDEFINED && eval('typeof ' + _opts.tracker + ' != "' + UNDEFINED + '"')) {
   var fn = eval(_opts.tracker);
   if (typeof fn == FUNCTION)
    fn((_l.pathname + (/\/$/.test(_l.pathname) ? '' : '/') + SWFAddress.getValue()).replace(/\/\//, '/').replace(/^\/$/, ''));
  }
 }
 
 var _htmlWrite = function() {
  var doc = _iframe.contentWindow.document;
  doc.open();
  doc.write('<script>var ' + SWFADDRESS + ' = "' + _getHash() + '";</script>');
  doc.close();
 }

 var _htmlLoad = function() {
  var win = _iframe.contentWindow;
  if (_opts.html) {
   var src = win.location.href;
   _value = (src.indexOf('?') > -1) ? src.substr(src.indexOf('?') + 1) : '';
  } else {
   _value = (typeof win[SWFADDRESS] != UNDEFINED) ? win[SWFADDRESS] : '';
  }
  win.document.title = _d.title;
  if (_value != _getHash()) {
   _update();
   _l.hash = _ieLocal(_value);
  }
 }

 var _load = function() {
  var attr = 'id="' + SWFADDRESS + '" style="position:absolute;top:-9999px;"';
  if (_browser.isIE()) {
   document.body.appendChild(document.createElement('div')).innerHTML = '<iframe ' + attr + ' src="' + 
    (_opts.html ? _url.replace(/\.js(\?.*)?$/, '.html') + '?' + _getHash() : 'javascript:false;') + 
    '" width="0" height="0"></iframe>';
   _iframe = document.getElementById(SWFADDRESS);
   _st(function() {
    _events.addListener(_iframe, 'load', _htmlLoad);   
    if (!_opts.html && typeof _iframe.contentWindow[SWFADDRESS] == UNDEFINED) 
     _htmlWrite();
   }, 10);
  } else if (_browser.isSafari()) {
   if (_version < 412) {
    document.body.innerHTML += '<form ' + attr + ' method="get"></form>';
    _form = document.getElementById(SWFADDRESS);
   }
   if (typeof _l[SWFADDRESS] == UNDEFINED) _l[SWFADDRESS] = {};
   if (typeof _l[SWFADDRESS][_l.pathname] != UNDEFINED) _stack = _l[SWFADDRESS][_l.pathname].split(',');
  } else if (_browser.isOpera() && _ids.length == 0 && typeof navigator.plugins['Shockwave Flash'] == 'object') {
   document.body.innerHTML += '<embed ' + attr + ' src="' + _url.replace(/\.js(\?.*)?$/, '.swf') + 
    '" type="application/x-shockwave-flash" />';
  }
  _st(_jsInit, 1);
  _st(_jsChange, 2);
  _st(_track, 10);
  setInterval(_listen, 50);
 }

 /**
  * Init event.
  * @type Function
  * @event
  * @static
  */
 this.onInit = null;
 
 /**
  * Change event.
  * @type Function
  * @event
  * @static
  */
 this.onChange = null;
 
 /**
  * String representation of this class.
  * @ignore
  */
 this.toString = function() {
  return '[class SWFAddress]';
 }

 /**
  * Loads the previous URL in the history list.
  * @return {void}
  * @static
  */
 this.back = function() {
  _h.back();
 }

 /**
  * Loads the next URL in the history list.
  * @return {void}
  * @static
  */
 this.forward = function() {
  _h.forward();
 }

 /**
  * Loads a URL from the history list.
  * @param {Number} delta An integer representing a relative position in the history list.
  * @return {void}
  * @static
  */
 this.go = function(delta) {
  _h.go(delta);
 }

 /**
  * Opens a new URL in the browser. 
  * @param {String} url The resource to be opened.
  * @param {String} target Target window.
  * @return {void}
  * @static
  */
 this.href = function(url, target) {
  target = (typeof target != UNDEFINED) ? target : '_self';  
  if (target == '_self')
   self.location.href = url; 
  if (target == '_top')
   _l.href = url; 
  if (target == '_blank')
   window.open(url); 
  else
   _t.frames[target].location.href = url; 
 }

 /**
  * Opens a browser popup window. 
  * @param {String} url Resource location.
  * @param {String} name Name of the popup window.
  * @param {String} options Options which get evaluted and passed to the window.open() method.
  * @param {String} handler Optional JavaScript code for popup handling. 
  * @return {void}
  * @static
  */
 this.popup = function(url, name, options, handler) {
  var popup = window.open(url, name, eval(options));
  eval(handler);
 }

 /**
  * Registers an event listener.
  * @param {String} type Event type.
  * @param {Function} listener Event listener.
  * @return {void}
  * @static
  */
 this.addEventListener = function(type, listener) {
  if (typeof _listeners[type] == UNDEFINED)
   _listeners[type] = [];
  _listeners[type].push(listener);
 }

 /**
  * Removes an event listener.
  * @param {String} type Event type.
  * @param {Function} listener Event listener.
  * @return {void}
  * @static  
  */
 this.removeEventListener = function(type, listener) {
  if (typeof _listeners[type] != UNDEFINED) {
   for (var i = 0, l; l = _listeners[type][i]; i++)
    if (l == listener) break;
   _listeners[type].splice(i, 1);
  }
 }

 /**
  * Dispatches an event to all the registered listeners. 
  * @param {Object} event Event object.
  * @return {Boolean}
  * @static
  */
 this.dispatchEvent = function(event) {
  if (typeof _listeners[event.type] != UNDEFINED && _listeners[event.type].length) {
   event.target = this;
   for (var i = 0, l; l = _listeners[event.type][i]; i++)
    l(event);
   return true;   
  }
  return false;
 }

 /**
  * Checks the existance of any listeners registered for a specific type of event. 
  * @param {String} event Event type.
  * @return {Boolean}
  * @static
  */
 this.hasEventListener = function(type) {
  return (typeof _listeners[type] != UNDEFINED && _listeners[type].length > 0);
 }
 
 /**
  * Provides the base address of the document. 
  * @return {String}
  * @static
  */
 this.getBaseURL = function() {
  var url = _l.href;
  if (url.indexOf('#') != -1)
   url = url.substr(0, url.indexOf('#'));
  if (url.substr(url.length - 1) == '/')
   url = url.substr(0, url.length - 1);
  return url;
 }

 /**
  * Provides the state of the strict mode setting. 
  * @return {Boolean}
  * @static
  */
 this.getStrict = function() {
  return _opts.strict;
 }

 /**
  * Enables or disables the strict mode.
  * @param {Boolean} strict Strict mode state.
  * @return {void}
  * @static
  */
 this.setStrict = function(strict) {
  _opts.strict = strict;
 }

 /**
  * Provides the state of the history setting. 
  * @return {Boolean}
  * @static
  */
 this.getHistory = function() {
  return _opts.history;
 }

 /**
  * Enables or disables the creation of history entries.
  * @param {Boolean} history History state.
  * @return {void}
  * @static
  */
 this.setHistory = function(history) {
  _opts.history = history;
 }

 /**
  * Provides the tracker function.
  * @return {String}
  * @static
  */
 this.getTracker = function() {
  return _opts.tracker;
 }

 /**
  * Sets a function for page view tracking. The default value is 'urchinTracker'.
  * @param {String} tracker Tracker function.
  * @return {void}
  * @static
  */
 this.setTracker = function(tracker) {
  _opts.tracker = tracker;
 }

 /**
  * Provides a list of all the Flash objects registered. 
  * @return {Array}
  * @static
  */
 this.getIds = function() {
  return _ids;
 }

 /**
  * Provides the id the first and probably the only Flash object registered. 
  * @return {String}
  * @static
  */
 this.getId = function(index) {
  return _ids[0];
 }

 /**
  * Sets the id of a single Flash object which will be registered for deep linking.
  * @param {String} id ID of the object.
  * @return {void}
  * @static
  */
 this.setId = function(id) {
  _ids[0] = id;
 }

 /**
  * Adds an id to the list of Flash object registered for deep linking.
  * @param {String} id ID of the object.
  * @return {void}
  * @static
  */
 this.addId = function(id) {
  this.removeId(id);
  _ids.push(id);
 }

 /**
  * Removes an id from the list of Flash object registered for deep linking.
  * @param {String} id ID of the object.
  * @return {void}
  * @static
  */
 this.removeId = function(id) {
  for (var i = 0; i < _ids.length; i++) {
   if (id == _ids[i]) {
    _ids.splice(i, 1);
    break;
   }
  }
 }

 /**
  * Provides the title of the HTML document.
  * @return {String}
  * @static
  */
 this.getTitle = function() {
  return _d.title;
 }

 /**
  * Sets the title of the HTML document.
  * @param {String} title Title value.
  * @return {void}
  * @static
  */
 this.setTitle = function(title) {
  if (!_supported) return null;
  if (typeof title == UNDEFINED) return;
  if (title == 'null') title = '';
  _title = _d.title = title;
  _st(function() {
   if (_iframe && _iframe.contentWindow && _iframe.contentWindow.document && _iframe.contentWindow.title)
    _iframe.contentWindow.document.title = _title;
   }, 1000);
 }

 /**
  * Provides the status of the browser window.
  * @return {String}
  * @static
  */
 this.getStatus = function() {
  return _t.status;
 }

 /**
  * Sets the status of the browser window.
  * @param {String} status Status value.
  * @return {void}
  * @static
  */
 this.setStatus = function(status) {
  if (!_supported) return null;
  if (typeof status == UNDEFINED) return;
  if (!_browser.isSafari()) {
   status = _strictCheck((status != 'null') ? status : '', true);
   if (status == '/') status = '';
   if (!(/http(s)?:\/\//.test(status))) {
    var index = _l.href.indexOf('#');
    status = (index == -1 ? _l.href : _l.href.substr(0, index)) + '#' + status;
   }
   _t.status = status;
  }
 }

 /**
  * Resets the status of the browser window.
  * @return {void}
  * @static
  */
 this.resetStatus = function() {
  _t.status = '';
 }

 /**
  * Provides the current deep linking value.
  * @return {String}
  * @static
  */
 this.getValue = function() {
  if (!_supported) return null;
  return _strictCheck(_value, false);
 }

 /**
  * Sets the current deep linking value.
  * @param {String} value A value which will be appended to the base link of the HTML document.
  * @return {void}
  * @static
  */
 this.setValue = function(value) {
  if (!_supported) return null;
  if (typeof value == UNDEFINED) return;
  if (value == 'null') value = ''
  value = _strictCheck(value, true);
  if (value == '/') value = '';
  if (_value == value) return;
  _value = value;
  _silent = true;
  _update();
  _stack[_h.length] = _value;
  if (_browser.isSafari()) {
   if (_opts.history) {
    _l[SWFADDRESS][_l.pathname] = _stack.toString();
    _length = _h.length + 1;
    if (_version < 412) {
     if (_l.search == '') {
      _form.action = '#' + _value;
      _form.submit();
     }
    } else if (_version < 523){
     var evt = document.createEvent('MouseEvents');
     evt.initEvent('click', true, true);
     var anchor = document.createElement('a');
     anchor.href = '#' + _value;
     anchor.dispatchEvent(evt);    
    } else {
     _l.hash = '#' + _value;
    }
   } else {
    _l.replace('#' + _value);
   }
  } else if (_value != _getHash()) {
   if (_opts.history)
    _l.hash = '#' + _ieLocal(_value);
   else
    _l.replace('#' + _value);
  }
  if (_browser.isIE() && _opts.history) {
   if (_opts.html) {
    var loc = _iframe.contentWindow.location;
    loc.assign(loc.pathname + '?' + _getHash());
   } else {
    _htmlWrite();
   }
  }
  if (_browser.isSafari())
   _st(function(){ _silent = false; }, 1);
  else
   _silent = false;
 }

 /**
  * Provides the deep linking value without the query string.
  * @return {String}
  * @static
  */
 this.getPath = function() {
  var value = this.getValue();
  return (value.indexOf('?') != -1) ? value.split('?')[0] : value;
 }

 /**
  * Provides a list of all the folders in the deep linking path.
  * @return {Array}
  * @static
  */
 this.getPathNames = function() {
  var path = SWFAddress.getPath();
  var names = path.split('/');
  if (path.substr(0, 1) == '/')
   names.splice(0, 1);
  if (path.substr(path.length - 1, 1) == '/')
   names.splice(names.length - 1, 1);
  return names;
 }

 /**
  * Provides the query string part of the deep linking value.
  * @return {String}
  * @static
  */
 this.getQueryString = function() {
  var value = this.getValue();
  var index = value.indexOf('?');
  return (index != -1 && index < value.length) ? value.substr(index + 1) : '';
 }

 /**
  * Provides the value of a specific query parameter.
  * @param {String} param Parameter name.
  * @return {String}
  * @static
  */
 this.getParameter = function(param) {
  var value = this.getValue();
  var index = value.indexOf('?');
  if (index != -1) {
   value = value.substr(index + 1);
   var params = value.split('&');
   var p, i = params.length;
   while(i--) {
    p = params[i].split('=');
    if (p[0] == param)
     return p[1];
   }
  }
  return '';
 }

 /**
  * Provides a list of all the query parameter names.
  * @return {Array}
  * @static
  */
 this.getParameterNames = function() {
  var value = this.getValue();
  var index = value.indexOf('?');
    var names = [];
    if (index != -1) {
      value = value.substr(index + 1);
      if (value != '' && value.indexOf('=') != -1) {
        var params = value.split('&');
        var i = 0;
        while(i < params.length) {
          names.push(params[i].split('=')[0]);
             i++;
                }
            }
        }
        return names;
    }

    if (_supported) {
    
        for (var i = 1; i < _length; i++)
            _stack.push('');
            
        _stack.push(_getHash());
    
        if (_browser.isIE() && _l.hash != _getHash())
            _l.hash = '#' + _ieLocal(_getHash());
    
        try {
            _url = String(_searchScript(document).src);
            var qi = _url.indexOf('?');
            if (_url && qi > -1) {
                var param, params = _url.substr(qi + 1).split('&');
                for (var i = 0, p; p = params[i]; i++) {
                    param = p.split('=');
                    if (/^(history|html|strict)$/.test(param[0]))
                        _opts[param[0]] = (isNaN(param[1]) ? eval(param[1]) : (parseFloat(param[1]) > 0));
                    if (/^tracker$/.test(param[0]))
                        _opts[param[0]] = param[1];
                }
            }
        } catch(e) {}
        if (/file:\/\//.test(_l.href)) _opts.html = false;
    
        _titleCheck();
        _events.addListener(document, 'DOMContentLoaded', _load);
    
    } else {
        _track();
    }
}

/**
 * SWFAddress embed hooks.
 * @ignore
 */
new function() {

    var _func, _args;
    var UNDEFINED = 'undefined';

    if (typeof swfobject != UNDEFINED) SWFObject = swfobject;
    if (typeof FlashObject != UNDEFINED) SWFObject = FlashObject;
    
    if (typeof SWFObject != UNDEFINED) {
        if (SWFObject.prototype && SWFObject.prototype.write) {
            _func = SWFObject.prototype.write;
            SWFObject.prototype.write = function() {
                _args = arguments;
                if (this.getAttribute('version').major < 8) {
                    this.addVariable('$swfaddress', SWFAddress.getValue());
                    ((typeof _args[0] == 'string') ? 
                        document.getElementById(_args[0]) : _args[0]).so = this;
                }
                var success;
                if (success = _func.apply(this, _args))
                    SWFAddress.addId(this.getAttribute('id'));
                return success;
            }
        } else {
            _func = SWFObject.registerObject;
            SWFObject.registerObject = function() {
                _args = arguments;
                _func.apply(this, _args);
                SWFAddress.addId(_args[0]);            
            }
            _func = SWFObject.createSWF;
            SWFObject.createSWF = function() {
                _args = arguments;
                _func.apply(this, _args);
                SWFAddress.addId(_args[0].id);            
            }
            _func = SWFObject.embedSWF;
            SWFObject.embedSWF = function() {
                _args = arguments;
                _func.apply(this, _args);
                SWFAddress.addId(_args[8].id);            
            }
        }
    }
    
    if (typeof UFO != UNDEFINED) {
        _func = UFO.create;
        UFO.create = function() {
            _args = arguments;
            _func.apply(this, _args);
            SWFAddress.addId(_args[0].id);        
        }
    }
    
    if (typeof AC_FL_RunContent != UNDEFINED) {
        _func = AC_FL_RunContent;
        AC_FL_RunContent = function() {
            _args = arguments;        
            _func.apply(this, _args);
            for (var i = 0, l = _args.length; i < l; i++)
                if (_args[i]== 'id') SWFAddress.addId(_args[i+1]);
        }
    }
}