;(function(window){

if (window.BX.ajax)
	return;

var
	BX = window.BX,

	tempDefaultConfig = {},
	defaultConfig = {
		method: 'GET', // request method: GET|POST
		dataType: 'html', // type of data loading: html|json|script
		timeout: 0, // request timeout in seconds. 0 for browser-default
		async: true, // whether request is asynchronous or not
		processData: true, // any data processing is disabled if false, only callback call
		scriptsRunFirst: false, // whether to run _all_ found scripts before onsuccess call. script tag can have an attribute "bxrunfirst" to turn  this flag on only for itself
		emulateOnload: true,
		start: true, // send request immediately (if false, request can be started manually via XMLHttpRequest object returned)
		cache: true, // whether NOT to add random addition to URL
		preparePost: true, // whether set Content-Type x-www-form-urlencoded in POST
		headers: false, // add additional headers, example: [{'name': 'If-Modified-Since', 'value': 'Wed, 15 Aug 2012 08:59:08 GMT'}, {'name': 'If-None-Match', 'value': '0'}]
		lsTimeout: 30, //local storage data TTL. useless without lsId.
		lsForce: false //wheter to force query instead of using localStorage data. useless without lsId.
/*
other parameters:
	url: url to get/post
	data: data to post
	onsuccess: successful request callback. BX.proxy may be used.
	onfailure: request failure callback. BX.proxy may be used.

	lsId: local storage id - for constantly updating queries which can communicate via localStorage. core_ls.js needed

any of the default parameters can be overridden. defaults can be changed by BX.ajax.Setup() - for all further requests!
*/
	},
	ajax_session = null,
	loadedScripts = {},
	loadedScriptsQueue = [],
	r = {
		'url_utf': /[^\034-\254]+/g,
		'script_self': /\/bitrix\/js\/main\/core\/core(_ajax)*.js$/i,
		'script_self_window': /\/bitrix\/js\/main\/core\/core_window.js$/i,
		'script_self_admin': /\/bitrix\/js\/main\/core\/core_admin.js$/i,
		'script_onload': /window.onload/g
	};

// low-level method
BX.ajax = function(config)
{
	var status, data;

	if (!config || !config.url || !BX.type.isString(config.url))
	{
		return false;
	}

	for (var i in tempDefaultConfig)
		if (typeof (config[i]) == "undefined") config[i] = tempDefaultConfig[i];

	tempDefaultConfig = {};

	for (var i in defaultConfig)
		if (typeof (config[i]) == "undefined") config[i] = defaultConfig[i];

	config.method = config.method.toUpperCase();

	if (!BX.localStorage)
		config.lsId = null;

	if (BX.browser.IsIE())
	{
		var result = r.url_utf.exec(config.url);
		if (result)
		{
			do
			{
				config.url = config.url.replace(result, BX.util.urlencode(result));
				result = r.url_utf.exec(config.url);
			} while (result);
		}
	}

	if(config.dataType == 'json')
		config.emulateOnload = false;

	if (!config.cache && config.method == 'GET')
		config.url = BX.ajax._uncache(config.url);

	if (config.method == 'POST' && config.preparePost)
	{
		config.data = BX.ajax.prepareData(config.data);
	}

	var bXHR = true;
	if (config.lsId && !config.lsForce)
	{
		var v = BX.localStorage.get('ajax-' + config.lsId);
		if (v !== null)
		{
			bXHR = false;

			var lsHandler = function(lsData) {
				if (lsData.key == 'ajax-' + config.lsId && lsData.value != 'BXAJAXWAIT')
				{
					var data = lsData.value,
						bRemove = !!lsData.oldValue && data == null;
					if (!bRemove)
						BX.ajax.__run(config, data);
					else if (config.onfailure)
						config.onfailure("timeout");

					BX.removeCustomEvent('onLocalStorageChange', lsHandler);
				}
			}

			if (v == 'BXAJAXWAIT')
			{
				BX.addCustomEvent('onLocalStorageChange', lsHandler);
			}
			else
			{
				setTimeout(function() {lsHandler({key: 'ajax-' + config.lsId, value: v})}, 10);
			}
		}
	}

	if (bXHR)
	{
		config.xhr = BX.ajax.xhr();
		if (!config.xhr) return;

		if (config.lsId)
		{
			BX.localStorage.set('ajax-' + config.lsId, 'BXAJAXWAIT', config.lsTimeout);
		}

		config.xhr.open(config.method, config.url, config.async);
		if (config.method == 'POST' && config.preparePost)
		{
			config.xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		}
		if (typeof(config.headers) == "object")
		{
			for (var i = 0; i < config.headers.length; i++)
				config.xhr.setRequestHeader(config.headers[i].name, config.headers[i].value);
		}

		var bRequestCompleted = false;
		var onreadystatechange = config.xhr.onreadystatechange = function(additional)
		{
			if (bRequestCompleted)
				return;

			if (additional === 'timeout')
			{
				if (config.onfailure)
					config.onfailure("timeout");

				BX.onCustomEvent(config.xhr, 'onAjaxFailure', ['timeout', '', config]);

				config.xhr.onreadystatechange = BX.DoNothing;
				config.xhr.abort();

				if (config.async)
				{
					config.xhr = null;
				}
			}
			else
			{
				if (config.xhr.readyState == 4 || additional == 'run')
				{
					status = BX.ajax.xhrSuccess(config.xhr) ? "success" : "error";
					bRequestCompleted = true;
					config.xhr.onreadystatechange = BX.DoNothing;

					// var status = oAjax.arThreads[TID].httpRequest.getResponseHeader('X-Bitrix-Ajax-Status');
					// var bRedirect = (status == 'Redirect');

					if (status == 'success')
					{
						var data = config.xhr.responseText;

						if (config.lsId)
						{
							BX.localStorage.set('ajax-' + config.lsId, data, config.lsTimeout);
						}

						BX.ajax.__run(config, data);
					}
					else if (config.onfailure)
					{
						config.onfailure("status", config.xhr.status);
						BX.onCustomEvent(config.xhr, 'onAjaxFailure', ['status', config.xhr.status, config]);
					}

					if (config.async)
					{
						config.xhr = null;
					}
				}
			}
		}

		if (config.async && config.timeout > 0)
		{
			setTimeout(function() {
				if (config.xhr && !bRequestCompleted)
				{
					onreadystatechange("timeout");
				}
			}, config.timeout * 1000);
		}

		if (config.start)
		{
			config.xhr.send(config.data);

			if (!config.async)
			{
				onreadystatechange('run');
			}
		}

		return config.xhr;
	}
}

BX.ajax.xhr = function()
{
	if (window.XMLHttpRequest)
	{
		try {return new XMLHttpRequest();} catch(e){}
	}
	else if (window.ActiveXObject)
	{
		try { return new ActiveXObject("Msxml2.XMLHTTP.6.0"); }
			catch(e) {}
		try { return new ActiveXObject("Msxml2.XMLHTTP.3.0"); }
			catch(e) {}
		try { return new ActiveXObject("Msxml2.XMLHTTP"); }
			catch(e) {}
		try { return new ActiveXObject("Microsoft.XMLHTTP"); }
			catch(e) {}
		throw new Error("This browser does not support XMLHttpRequest.");
	}

	return null;
}

BX.ajax.__prepareOnload = function(scripts)
{
	if (scripts.length > 0)
	{
		BX.ajax['onload_' + ajax_session] = null;

		for (var i=0,len=scripts.length;i<len;i++)
		{
			if (scripts[i].isInternal)
			{
				scripts[i].JS = scripts[i].JS.replace(r.script_onload, 'BX.ajax.onload_' + ajax_session);
			}
		}
	}

	BX.CaptureEventsGet();
	BX.CaptureEvents(window, 'load');
}

BX.ajax.__runOnload = function()
{
	if (null != BX.ajax['onload_' + ajax_session])
	{
		BX.ajax['onload_' + ajax_session].apply(window);
		BX.ajax['onload_' + ajax_session] = null;
	}

	var h = BX.CaptureEventsGet();

	if (h)
	{
		for (var i=0; i<h.length; i++)
			h[i].apply(window);
	}
}

BX.ajax.__run = function(config, data)
{
	if (!config.processData)
	{
		if (config.onsuccess)
		{
			config.onsuccess(data);
		}

		BX.onCustomEvent(config.xhr, 'onAjaxSuccess', [data, config]);
	}
	else
	{
		data = BX.ajax.processRequestData(data, config);
	}
}


BX.ajax._onParseJSONFailure = function(data)
{
	this.jsonFailure = true;
	this.jsonResponse = data;
	this.jsonProactive = /^\[WAF\]/.test(data);
}

BX.ajax.processRequestData = function(data, config)
{
	var result, scripts = [], styles = [];
	switch (config.dataType.toUpperCase())
	{
		case 'JSON':
			BX.addCustomEvent(config.xhr, 'onParseJSONFailure', BX.proxy(BX.ajax._onParseJSONFailure, config));
			result = BX.parseJSON(data, config.xhr);
			BX.removeCustomEvent(config.xhr, 'onParseJSONFailure', BX.proxy(BX.ajax._onParseJSONFailure, config));

		break;
		case 'SCRIPT':
			scripts.push({"isInternal": true, "JS": data, bRunFirst: config.scriptsRunFirst});
			config.processScriptsConsecutive = true;
			result = data;
		break;

		default: // HTML
			var ob = BX.processHTML(data, config.scriptsRunFirst);
			result = ob.HTML; scripts = ob.SCRIPT; styles = ob.STYLE
		break;
	}

	var bSessionCreated = false;
	if (null == ajax_session)
	{
		ajax_session = parseInt(Math.random() * 1000000);
		bSessionCreated = true;
	}

	if (styles.length > 0)
		BX.loadCSS(styles);

	if (config.emulateOnload)
			BX.ajax.__prepareOnload(scripts);

	var cb = BX.DoNothing;
	if(config.emulateOnload || bSessionCreated)
	{
		cb = BX.defer(function()
		{
			if (config.emulateOnload)
				BX.ajax.__runOnload();
			if (bSessionCreated)
				ajax_session = null;
			BX.onCustomEvent(config.xhr, 'onAjaxSuccessFinish', [config]);
		});
	}

	try
	{
		if (!!config.jsonFailure)
		{
			throw {type: 'json_failure', data: config.jsonResponse, bProactive: config.jsonProactive};
		}

		config.scripts = scripts;

		BX.ajax.processScripts(config.scripts, true);


		if (config.onsuccess)
		{
			config.onsuccess(result);
		}

		BX.onCustomEvent(config.xhr, 'onAjaxSuccess', [result, config]);

		if(!config.processScriptsConsecutive)
		{
			BX.ajax.processScripts(config.scripts, false, cb);
		}
		else
		{
			BX.ajax.processScriptsConsecutive(config.scripts, false);
			cb();
		}
	}
	catch (e)
	{
		if (config.onfailure)
			config.onfailure("processing", e);
		BX.onCustomEvent(config.xhr, 'onAjaxFailure', ['processing', e, config]);
	}
}

BX.ajax.processScripts = function(scripts, bRunFirst, cb)
{
	var scriptsExt = [], scriptsInt = '';

	cb=cb||BX.DoNothing;

	for (var i = 0, length = scripts.length; i < length; i++)
	{
		if (typeof bRunFirst != 'undefined' && bRunFirst != !!scripts[i].bRunFirst)
			continue;

		if (scripts[i].isInternal)
			scriptsInt += ';' + scripts[i].JS
		else
			scriptsExt.push(scripts[i].JS);
	}

	scriptsExt = BX.util.array_unique(scriptsExt);

	var l=l1=scriptsExt.length,
		f=scriptsInt.length>0?function(){BX.evalGlobal(scriptsInt)}:BX.DoNothing;

	if(l>0)
	{
		var c=function(){if(--l1<=0){f();cb();f=BX.DoNothing;}};
		for(var i=0; i<l;i++)
		{
			BX.loadScript(scriptsExt[i], c);
		}
	}
	else
	{
		//f();BX.defer(cb)();
		f();cb();
	}
}

BX.ajax.processScriptsConsecutive = function(scripts, bRunFirst)
{
	for (var i = 0, length = scripts.length; i < length; i++)
	{
		if (null != bRunFirst && bRunFirst != !!scripts[i].bRunFirst)
			continue;

		if (scripts[i].isInternal)
		{
			BX.evalGlobal(scripts[i].JS);
		}
		else
		{
			BX.ajax.loadScriptAjax([scripts[i].JS]);
		}
	}
}

// TODO: extend this function to use with any data objects or forms
BX.ajax.prepareData = function(arData, prefix)
{
	var data = '';
	if (BX.type.isString(arData))
		data = arData;
	else if (null != arData)
	{
		for(var i in arData)
		{
			if (!arData.hasOwnProperty(i))
				continue;
			if (data.length > 0) data += '&';
			var name = BX.util.urlencode(i);
			if(prefix)
				name = prefix + '[' + name + ']';
			if(typeof arData[i] == 'object')
				data += BX.ajax.prepareData(arData[i], name)
			else
				data += name + '=' + BX.util.urlencode(arData[i])
		}
	}
	return data;
}

BX.ajax.xhrSuccess = function(xhr)
{
	return (xhr.status >= 200 && xhr.status < 300) || xhr.status === 304 || xhr.status === 1223 || xhr.status === 0;
}

BX.ajax.Setup = function(config, bTemp)
{
	bTemp = !!bTemp;

	for (var i in config)
	{
		if (bTemp)
			tempDefaultConfig[i] = config[i];
		else
			defaultConfig[i] = config[i];
	}
}

BX.ajax.replaceLocalStorageValue = function(lsId, data, ttl)
{
	if (!!BX.localStorage)
		BX.localStorage.set('ajax-' + lsId, data, ttl);
}


BX.ajax._uncache = function(url)
{
	return url + ((url.indexOf('?') !== -1 ? "&" : "?") + '_=' + (new Date).getTime());
}

/* simple interface */
BX.ajax.get = function(url, data, callback)
{
	if (BX.type.isFunction(data))
	{
		callback = data;
		data = '';
	}

	data = BX.ajax.prepareData(data);

	if (data)
	{
		url += (url.indexOf('?') !== -1 ? "&" : "?") + data;
		data = '';
	}

	return BX.ajax({
		'method': 'GET',
		'dataType': 'html',
		'url': url,
		'data':  '',
		'onsuccess': callback
	});
}

BX.ajax.getCaptcha = function(callback)
{
	return BX.ajax.loadJSON('/bitrix/tools/ajax_captcha.php', callback);
}

BX.ajax.insertToNode = function(url, node)
{
	if (node = BX(node))
	{
		BX.onCustomEvent('onAjaxInsertToNode', [{url: url, node: node}]);

		var show = null;
		if (!tempDefaultConfig.denyShowWait)
		{
			show = BX.showWait(node);
			delete tempDefaultConfig.denyShowWait;
		}

		return BX.ajax.get(url, function(data) {
			node.innerHTML = data;
			BX.closeWait(node, show);
		});
	}
}

BX.ajax.post = function(url, data, callback)
{
	data = BX.ajax.prepareData(data);

	return BX.ajax({
		'method': 'POST',
		'dataType': 'html',
		'url': url,
		'data':  data,
		'onsuccess': callback
	});
}

/* load and execute external file script with onload emulation */
BX.ajax.loadScriptAjax = function(script_src, callback, bPreload)
{
	if (BX.type.isArray(script_src))
	{
		for (var i=0,len=script_src.length;i<len;i++)
		{
			BX.ajax.loadScriptAjax(script_src[i], callback, bPreload);
		}
	}
	else
	{
		var script_src_test = script_src.replace(/\.js\?.*/, '.js');

		if (r.script_self.test(script_src_test)) return;
		if (r.script_self_window.test(script_src_test) && BX.CWindow) return;
		if (r.script_self_admin.test(script_src_test) && BX.admin) return;

		if (typeof loadedScripts[script_src_test] == 'undefined')
		{
			if (!!bPreload)
			{
				loadedScripts[script_src_test] = '';
				return BX.loadScript(script_src);
			}
			else
			{
				return BX.ajax({
					url: script_src,
					method: 'GET',
					dataType: 'script',
					processData: true,
					emulateOnload: false,
					scriptsRunFirst: true,
					async: false,
					start: true,
					onsuccess: function(result) {
						loadedScripts[script_src_test] = result;
						if (callback)
							callback(result);
					}
				});
			}
		}
		else if (callback)
		{
			callback(loadedScripts[script_src_test]);
		}
	}
}

/* non-xhr loadings */
BX.ajax.loadJSON = function(url, data, callback, callback_failure)
{
	if (BX.type.isFunction(data))
	{
		callback_failure = callback;
		callback = data;
		data = '';
	}

	data = BX.ajax.prepareData(data);

	if (data)
	{
		url += (url.indexOf('?') !== -1 ? "&" : "?") + data;
		data = '';
	}

	return BX.ajax({
		'method': 'GET',
		'dataType': 'json',
		'url': url,
		'onsuccess': callback,
		'onfailure': callback_failure
	});
}

/*
arObs = [{
	url: url,
	type: html|script|json|css,
	callback: function
}]
*/
BX.ajax.load = function(arObs, callback)
{
	if (!BX.type.isArray(arObs))
		arObs = [arObs];

	var cnt = 0;

	if (!BX.type.isFunction(callback))
		callback = BX.DoNothing;

	var handler = function(data)
		{
			if (BX.type.isFunction(this.callback))
				this.callback(data);

			if (++cnt >= len)
				callback();
		};

	for (var i = 0, len = arObs.length; i<len; i++)
	{
		switch(arObs.type.toUpperCase())
		{
			case 'SCRIPT':
				BX.loadScript([arObs[i].url], jsBX.proxy(handler, arObs[i]));
			break;
			case 'CSS':
				BX.loadCSS([arObs[i].url]);

				if (++cnt >= len)
					callback();
			break;
			case 'JSON':
				BX.ajax.loadJSON(arObs.url, jsBX.proxy(handler, arObs[i]));
			break;

			default:
				BX.ajax.get(arObs.url, '', jsBX.proxy(handler, arObs[i]));
			break;
		}
	}
}

/* ajax form sending */
BX.ajax.submit = function(obForm, callback)
{
	if (!obForm.target)
	{
		if (null == obForm.BXFormTarget)
		{
			var frame_name = 'formTarget_' + Math.random();
			obForm.BXFormTarget = document.body.appendChild(BX.create('IFRAME', {
				props: {
					name: frame_name,
					id: frame_name,
					src: 'javascript:void(0)'
				},
				style: {
					display: 'none'
				}
			}));
		}

		obForm.target = obForm.BXFormTarget.name;
	}

	obForm.BXFormCallback = callback;
	BX.bind(obForm.BXFormTarget, 'load', BX.proxy(BX.ajax._submit_callback, obForm));

	BX.submit(obForm);

	return false;
}

BX.ajax.submitComponentForm = function(obForm, container, bWait)
{
	if (!obForm.target)
	{
		if (null == obForm.BXFormTarget)
		{
			var frame_name = 'formTarget_' + Math.random();
			obForm.BXFormTarget = document.body.appendChild(BX.create('IFRAME', {
				props: {
					name: frame_name,
					id: frame_name,
					src: 'javascript:void(0)'
				},
				style: {
					display: 'none'
				}
			}));
		}

		obForm.target = obForm.BXFormTarget.name;
	}

	if (!!bWait)
		var w = BX.showWait(container);

	obForm.BXFormCallback = function(d) {
		if (!!bWait)
			BX.closeWait(w);

		BX(container).innerHTML = d;
		if (window.bxcompajaxframeonload){
			setTimeout("window.bxcompajaxframeonload();window.bxcompajaxframeonload=null;", 10)
		};
		BX.onCustomEvent('onAjaxSuccess', []);
	};

	BX.bind(obForm.BXFormTarget, 'load', BX.proxy(BX.ajax._submit_callback, obForm));

	return true;
}

// func will be executed in form context
BX.ajax._submit_callback = function()
{
	//opera and IE8 triggers onload event even on empty iframe
	try
	{
		if(this.BXFormTarget.contentWindow.location.href.indexOf('http') != 0)
			return;
	} catch (e) {
		return;
	}

	if (this.BXFormCallback)
		this.BXFormCallback.apply(this, [this.BXFormTarget.contentWindow.document.body.innerHTML]);

	BX.unbindAll(this.BXFormTarget);
}

// TODO: currently in window extension. move it here.
BX.ajax.submitAjax = function(obForm, callback)
{

}

BX.ajax.UpdatePageData = function (arData)
{
	if (arData.TITLE)
		BX.ajax.UpdatePageTitle(arData.TITLE);
	if (arData.NAV_CHAIN)
		BX.ajax.UpdatePageNavChain(arData.NAV_CHAIN);
	if (arData.CSS && arData.CSS.length > 0)
		BX.loadCSS(arData.CSS);
	if (arData.SCRIPTS && arData.SCRIPTS.length > 0)
	{
		var f=function(result,config){
			if(!!config && BX.type.isArray(config.scripts))
			{
				for(var i=0,l=arData.SCRIPTS.length;i<l;i++)
				{
					config.scripts.push({isInternal:false,JS:arData.SCRIPTS[i]});
				}
			}
			else
			{
				BX.loadScript(arData.SCRIPTS);
			}

			BX.removeCustomEvent('onAjaxSuccess',f);
		}
		BX.addCustomEvent('onAjaxSuccess',f);
	}
}

BX.ajax.UpdatePageTitle = function(title)
{
	var obTitle = BX('pagetitle');
	if (obTitle)
	{
		obTitle.removeChild(obTitle.firstChild);
		if (!obTitle.firstChild)
			obTitle.appendChild(document.createTextNode(title));
		else
			obTitle.insertBefore(document.createTextNode(title), obTitle.firstChild);
	}

	document.title = title;
}

BX.ajax.UpdatePageNavChain = function(nav_chain)
{
	var obNavChain = BX('navigation');
	if (obNavChain)
	{
		obNavChain.innerHTML = nav_chain;
	}
}

/* user options handling */
BX.userOptions = {
	options: null,
	bSend: false,
	delay: 5000
}

BX.userOptions.save = function(sCategory, sName, sValName, sVal, bCommon)
{
	if (null == BX.userOptions.options)
		BX.userOptions.options = {};

	bCommon = !!bCommon;
	BX.userOptions.options[sCategory+'.'+sName+'.'+sValName] = [sCategory, sName, sValName, sVal, bCommon];

	var sParam = BX.userOptions.__get();
	if (sParam != '')
		document.cookie = BX.message('COOKIE_PREFIX')+"_LAST_SETTINGS=" + sParam + "&sessid="+BX.bitrix_sessid()+"; expires=Thu, 31 Dec 2020 23:59:59 GMT; path=/;";

	if(!BX.userOptions.bSend)
	{
		BX.userOptions.bSend = true;
		setTimeout(function(){BX.userOptions.send(null)}, BX.userOptions.delay);
	}
}

BX.userOptions.send = function(callback)
{
	var sParam = BX.userOptions.__get();
	BX.userOptions.options = null;
	BX.userOptions.bSend = false;

	if (sParam != '')
	{
		document.cookie = BX.message('COOKIE_PREFIX') + "_LAST_SETTINGS=; path=/;";
		BX.ajax({
			'method': 'GET',
			'dataType': 'html',
			'processData': false,
			'cache': false,
			'url': '/bitrix/admin/user_options.php?'+sParam+'&sessid='+BX.bitrix_sessid(),
			'onsuccess': callback
		});
	}
}

BX.userOptions.del = function(sCategory, sName, bCommon, callback)
{
	BX.ajax.get('/bitrix/admin/user_options.php?action=delete&c='+sCategory+'&n='+sName+(bCommon == true? '&common=Y':'')+'&sessid='+BX.bitrix_sessid(), callback);
}

BX.userOptions.__get = function()
{
	if (!BX.userOptions.options) return '';

	var sParam = '', n = -1, prevParam = '', aOpt, i;

	for (i in BX.userOptions.options)
	{
		aOpt = BX.userOptions.options[i];

		if (prevParam != aOpt[0]+'.'+aOpt[1])
		{
			n++;
			sParam += '&p['+n+'][c]='+BX.util.urlencode(aOpt[0]);
			sParam += '&p['+n+'][n]='+BX.util.urlencode(aOpt[1]);
			if (aOpt[4] == true)
				sParam += '&p['+n+'][d]=Y';
			prevParam = aOpt[0]+'.'+aOpt[1];
		}

		sParam += '&p['+n+'][v]['+BX.util.urlencode(aOpt[2])+']='+BX.util.urlencode(aOpt[3]);
	}

	return sParam.substr(1);
}

BX.ajax.history = {
	expected_hash: '',

	obParams: null,

	obFrame: null,
	obImage: null,

	obTimer: null,

	bInited: false,
	bHashCollision: false,
	bPushState: !!(history.pushState && BX.type.isFunction(history.pushState)),

	startState: null,

	init: function(obParams)
	{
		if (BX.ajax.history.bInited)
			return;

		this.obParams = obParams;
		var obCurrentState = this.obParams.getState();

		if (BX.ajax.history.bPushState)
		{
			BX.ajax.history.expected_hash = window.location.pathname;
			if (window.location.search)
				BX.ajax.history.expected_hash += window.location.search;

			BX.ajax.history.put(obCurrentState, BX.ajax.history.expected_hash, '', true);
			// due to some strange thing, chrome calls popstate event on page start. so we should delay it
			setTimeout("BX.bind(window, 'popstate', BX.ajax.history.__hashListener);", 500);
		}
		else
		{
			BX.ajax.history.expected_hash = window.location.hash;

			if (!BX.ajax.history.expected_hash || BX.ajax.history.expected_hash == '#')
				BX.ajax.history.expected_hash = '__bx_no_hash__';

			jsAjaxHistoryContainer.put(BX.ajax.history.expected_hash, obCurrentState);
			BX.ajax.history.obTimer = setTimeout(BX.ajax.history.__hashListener, 500);

			if (BX.browser.IsIE())
			{
				BX.ajax.history.obFrame = document.createElement('IFRAME');
				BX.hide_object(BX.ajax.history.obFrame);

				document.body.appendChild(BX.ajax.history.obFrame);

				BX.ajax.history.obFrame.contentWindow.document.open();
				BX.ajax.history.obFrame.contentWindow.document.write(BX.ajax.history.expected_hash);
				BX.ajax.history.obFrame.contentWindow.document.close();
			}
			else if (BX.browser.IsOpera())
			{
				BX.ajax.history.obImage = document.createElement('IMG');
				BX.hide_object(BX.ajax.history.obImage);

				document.body.appendChild(BX.ajax.history.obImage);

				BX.ajax.history.obImage.setAttribute('src', 'javascript:location.href = \'javascript:BX.ajax.history.__hashListener();\';');
			}
		}

		BX.ajax.history.bInited = true;
	},

	__hashListener: function(e)
	{
		e = e || window.event || {state:false};

		if (BX.ajax.history.bPushState)
		{
			BX.ajax.history.obParams.setState(e.state||BX.ajax.history.startState);
		}
		else
		{
			if (BX.ajax.history.obTimer)
			{
				window.clearTimeout(BX.ajax.history.obTimer);
				BX.ajax.history.obTimer = null;
			}

			if (null != BX.ajax.history.obFrame)
				var current_hash = BX.ajax.history.obFrame.contentWindow.document.body.innerText;
			else
				var current_hash = window.location.hash;

			if (!current_hash || current_hash == '#')
				current_hash = '__bx_no_hash__';

			if (current_hash.indexOf('#') == 0)
				current_hash = current_hash.substring(1);

			if (current_hash != BX.ajax.history.expected_hash)
			{
				var state = jsAjaxHistoryContainer.get(current_hash);
				if (state)
				{
					BX.ajax.history.obParams.setState(state);

					BX.ajax.history.expected_hash = current_hash;
					if (null != BX.ajax.history.obFrame)
					{
						var __hash = current_hash == '__bx_no_hash__' ? '' : current_hash;
						if (window.location.hash != __hash && window.location.hash != '#' + __hash)
							window.location.hash = __hash;
					}
				}
			}

			BX.ajax.history.obTimer = setTimeout(BX.ajax.history.__hashListener, 500);
		}
	},

	put: function(state, new_hash, new_hash1, bStartState)
	{
		if (this.bPushState)
		{
			if(!bStartState)
			{
				history.pushState(state, '', new_hash);
			}
			else
			{
				BX.ajax.history.startState = state;
			}
		}
		else
		{
			if (typeof new_hash1 != 'undefined')
				new_hash = new_hash1;
			else
				new_hash = 'view' + new_hash;

			jsAjaxHistoryContainer.put(new_hash, state);
			BX.ajax.history.expected_hash = new_hash;

			window.location.hash = BX.util.urlencode(new_hash);

			if (null != BX.ajax.history.obFrame)
			{
				BX.ajax.history.obFrame.contentWindow.document.open();
				BX.ajax.history.obFrame.contentWindow.document.write(new_hash);
				BX.ajax.history.obFrame.contentWindow.document.close();
			}
		}
	},

	checkRedirectStart: function(param_name, param_value)
	{
		var current_hash = window.location.hash;
		if (current_hash.substring(0, 1) == '#') current_hash = current_hash.substring(1);

		var test = current_hash.substring(0, 5);
		if (test == 'view/' || test == 'view%')
		{
			BX.ajax.history.bHashCollision = true;
			document.write('<' + 'div id="__ajax_hash_collision_' + param_value + '" style="display: none;">');
		}
	},

	checkRedirectFinish: function(param_name, param_value)
	{
		document.write('</div>');

		var current_hash = window.location.hash;
		if (current_hash.substring(0, 1) == '#') current_hash = current_hash.substring(1);

		BX.ready(function ()
		{
			var test = current_hash.substring(0, 5);
			if (test == 'view/' || test == 'view%')
			{
				var obColNode = BX('__ajax_hash_collision_' + param_value);
				var obNode = obColNode.firstChild;
				BX.cleanNode(obNode);
				obColNode.style.display = 'block';

				// IE, Opera and Chrome automatically modifies hash with urlencode, but FF doesn't ;-(
				if (test != 'view%')
					current_hash = BX.util.urlencode(current_hash);

				current_hash += (current_hash.indexOf('%3F') == -1 ? '%3F' : '%26') + param_name + '=' + param_value;

				var url = '/bitrix/tools/ajax_redirector.php?hash=' + current_hash;

				BX.ajax.insertToNode(url, obNode);
			}
		});
	}
}

BX.ajax.component = function(node)
{
	this.node = node;
}

BX.ajax.component.prototype.getState = function()
{
	var state = {
		'node': this.node,
		'title': window.document.title,
		'data': BX(this.node).innerHTML
	};

	var obNavChain = BX('navigation');
	if (null != obNavChain)
		state.nav_chain = obNavChain.innerHTML;

	return state;
}

BX.ajax.component.prototype.setState = function(state)
{
	BX(state.node).innerHTML = state.data;
	BX.ajax.UpdatePageTitle(state.title);

	if (state.nav_chain)
		BX.ajax.UpdatePageNavChain(state.nav_chain);
}

var jsAjaxHistoryContainer = {
	arHistory: {},

	put: function(hash, state)
	{
		this.arHistory[hash] = state;
	},

	get: function(hash)
	{
		return this.arHistory[hash];
	}
}


BX.ajax.FormData = function()
{
	this.elements = [];
	this.files = [];
	this.features = {};
	this.isSupported();
	this.log('BX FormData init');
}

BX.ajax.FormData.isSupported = function()
{
	var f = new BX.ajax.FormData()
	var result = f.features.supported;
	f = null;
	return result;
}

BX.ajax.FormData.prototype.log = function(o)
{
	if (false) {
		try {
			if (BX.browser.IsIE()) o = JSON.stringify(o);
			console.log(o);
		} catch(e) {}
	}
}

BX.ajax.FormData.prototype.isSupported = function()
{
	var f = {};
	f.fileReader = (window.FileReader && window.FileReader.prototype.readAsBinaryString);
	f.readFormData = f.sendFormData = !!(window.FormData);
	f.supported = !!(f.readFormData && f.sendFormData);
	this.features = f;
	this.log('features:');
	this.log(f);

	return f.supported;
}

BX.ajax.FormData.prototype.append = function(name, value)
{
	if (typeof(value) === 'object') { // seems to be files element
		this.files.push({'name': name, 'value':value});
	} else {
		this.elements.push({'name': name, 'value':value});
	}
}

BX.ajax.FormData.prototype.send = function(url, callbackOk, callbackProgress, callbackError)
{
	this.log('FD send');
	this.xhr = BX.ajax({
			'method': 'POST',
			'dataType': 'html',
			'url': url,
			'onsuccess': callbackOk,
			'onfailure': callbackError,
			'start': false,
			'preparePost':false
		});

	if (callbackProgress)
	{
		this.xhr.upload.addEventListener(
			'progress',
			function(e) {
				if (e.lengthComputable)
					callbackProgress(e.loaded / e.totalSize);
			},
			false
		);
	}

	if (this.features.readFormData && this.features.sendFormData)
	{
		var fd = new FormData();
		this.log('use browser formdata');
		for (i in this.elements)
			fd.append(this.elements[i].name,this.elements[i].value);
		for (i in this.files)
			fd.append(this.files[i].name, this.files[i].value);
		this.xhr.send(fd);
	}

	return this.xhr;
}

BX.addCustomEvent('onAjaxFailure', BX.debug);
})(window)
