if (typeof(getCookie) == "undefined") {
	var getCookie = function(cookieName) {
		var cookieKey = cookieName + "=";
		var cookieArray = document.cookie.split(';');
		for (var i=0; i < cookieArray.length; ++i) {
			var cookieReference = cookieArray[i];
			while (cookieReference.charAt(0)==' ') { 
				cookieReference = cookieReference.substring(1,cookieReference.length);
			}
			if (cookieReference.indexOf(cookieKey) == 0) { 
				return ( unescape (cookieReference.substring(cookieKey.length,cookieReference.length)) );
			}
		}
	}
}

var MYT = function(){
	
	var _authUrl;
	var _adId, _clickPosition;
	var _loginWindow, _loginFormName = "savevehiclesloginform";
	var _ajaxResponseCodes = {
		"Already Saved": "That listing has already been saved.",
		"Saved Sucessfully": "The listing has been saved."
	};
	var _setLoginWindowVisibility = function(visibility) {
		if (_loginWindow) {
			_loginWindow.style.visibility = visibility;
		}
	};
	
	return {
		
		hideLoginWindow: function(){ _setLoginWindowVisibility("hidden"); },
		showLoginWindow: function(){ _setLoginWindowVisibility("visible"); },
		
		isLoggedIn: function(){
			if (getCookie('MYT_UID')) return true;
			return false;
		},
		
		loginSaveListing: function(){
			var _handleId = document[_loginFormName].HANDLE_ID.value;
			var _password = document[_loginFormName].PASSWORD.value;
			if (!_handleId) {
				alert("You must enter your user name.");
				return;
			}
			if (!_password) {
				alert("You must enter your password.");
				return;
			}
			this.hideLoginWindow();
			var _query = "&HANDLE_ID=" + _handleId + "&PASSWORD=" + _password;
			return this.saveListing(_adId, _clickPosition, _query);
		},		

		saveListing: function(adId, clickPosition){
			// register the adId and click position for this request
			_adId = adId, _clickPosition = clickPosition;

			// build the query
			var _query = "action=save1&AD_ID=" + _adId;
			if (arguments.length > 2) {
				_query += arguments[2];
			}
			
			// make a request to the authentication "service"
			var _req = new ajax();
			_req.callBackFunc = function(){
				MYT.handleSaveListingResponse(_req, _adId, _clickPosition);
			};
			_req.postData = _query;
			_req.loadXMLDoc("/find/login-popup");	
		},
		
		handleSaveListingResponse: function(req, adId, clickPosition){
			// get the response
			var _text = req.responseText;
			
			// handle any messages sent
			for (var _code in _ajaxResponseCodes) {
				if (_text.search("&" + _code) != -1) {
					alert(_ajaxResponseCodes[_code]);
					this.sendAuthentication();
					return;
				}
			}

			// if no messages are sent, setup the login window
			var _left = 0, _top = 0;
			if (clickPosition.pageX) {
				_left = 200;
				_top = clickPosition.pageY-40;
			} else {
				_left = 380;			
				_top = document.body.scrollTop+40;
			}
			var _divs = document.getElementsByTagName("div");
			for (var i=0; i<_divs.length; i++) {
				if (_divs[i].className == "mytlogindiv") {
					_loginWindow = _divs[i];
				}
			}

			_loginWindow.style.top = _top > 0  ? _top : 0;
			_loginWindow.style.left = _left > 0 ? _left : 0;
			_loginWindow.innerHTML = _text;
			
			// show the login window
			this.showLoginWindow();
		},		
		
		sendAuthentication: function(){
			if (!_authUrl) return;
			var _credentials = {
				"HANDLE_ID": document[_loginFormName].HANDLE_ID.value,
				"PASSWORD": document[_loginFormName].PASSWORD.value,
				"REDIRECT": window.location.href
			};
			var _authForm = document.createElement("form");
			_authForm.setAttribute("method", "post");
			_authForm.setAttribute("action", _authUrl);
			for (var _key in _credentials) {
				var _field = document.createElement("input");
				_field.setAttribute("type", "hidden");
				_field.setAttribute("name", _key);
				_field.setAttribute("value", _credentials[_key]);
				_authForm.appendChild(_field);
			}
			document.body.appendChild(_authForm);
			_authForm.submit();
		},
		
		init: function(){
			var _notLoggedInHeader = document.getElementById('mytLogoCntrNotLoggedIn');	
			var _loggedInHeader = document.getElementById('mytLogoCntrLoggedIn');	
			if (this.isLoggedIn()) {
				_notLoggedInHeader.style.display ='none'; 
				_loggedInHeader.style.display ='block';	
			} else 	{
				_loggedInHeader.style.display ='none'; 	
				_notLoggedInHeader.style.display ='block';
				_authUrl = _notLoggedInHeader.getElementsByTagName("a")[0].href;
			}	
		}		

	};
	
}();

/*******************************************************************************
 * The following aliases exist for backward compatibility. New code should make
 * use of the MYT namespace methods.
 */

if (window.location.href.search("listing") != -1) {
	var saveVehicle = function(adId, thisev) {
		return MYT.saveListing(adId, thisev);
	};
	var performLogin = function(){
		return MYT.loginSaveListing();
	};
}

var hideLogin = MYT.hideLoginWindow;
/**
 * end aliases
/******************************************************************************/

MYT.init();