!function() {
    "use strict";
	
	var _W = window, _D = document, _C = _W.console;
	if( !_C ) _C = {
			log: function() {},
			error: function() {}
		}
	
	_W.KRLC = {
		proto: function() {
			var e = _W.location && _W.location.protocol;
			return -1 === ["http", "https"].indexOf(e || "") && (e = "https:"),
			e
		},
		ajaxGET: function( data, cb, cberr ){
			var xhr = new XMLHttpRequest;
			xhr.onreadystatechange = function() {
				if( 4 === xhr.readyState ){
					if( 200 === xhr.status ) {
						var res = xhr.responseType && "text" !== xhr.responseType ? "document" === xhr.responseType ? xhr.responseXML : xhr.response : xhr.responseText;
						try {
							res = _W.MooTools && void 0 === JSON.parse ? JSON.decode( res ) : JSON.parse( res );
						} catch (e) {
							"function" == typeof cberr && cberr( 2, e.message );
							return;
						}
						if( res ){
							if( "undefined" != typeof res.d ) "function" == typeof cb && cb( res.d );
							else if( "undefined" != typeof res.err ) "function" == typeof cberr && cberr( 4, res.err );
							else "function" == typeof cberr && cberr( 5 );
						}else "function" == typeof cberr && cberr( 3 );
					}else "function" == typeof cberr && cberr( 1, xhr.status );
				}
			}
			xhr.open( "GET", this.ajaxURL + data, !0 );
			xhr.send( null );
		}
	}
	
	var _LC = _W.KRLC;
	
	_LC._LS = !1;
	try{
		if( _W.localStorage && "function" == typeof _W.localStorage.getItem ){
			_W.localStorage.setItem( 'krlc_temp', 'test' );
			_W.localStorage.removeItem( 'krlc_temp' );
			_LC._LS = !0;
		}else
			_C.log( 'Local storage not set' );
	} catch (e) {
		_C.log( 'Local storage access exception ' + e.name + ': ' + e.message );
	}

	_LC._CK = !1;
	try{
		document.cookie = "krlc_temp=test";
		if( document.cookie.indexOf( "krlc_temp=test" ) !== -1 ){
			_LC._CK = !0;
			document.cookie = "krlc_temp=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;";
		}else
			_C.log( 'Cookie not set' );
	} catch (e) {
		_C.log( 'Cookie access exception ' + e.name + ': ' + e.message );
	}

	_LC.getItem = function( name ){
		if( _LC._LS ){
			return _W.localStorage.getItem( name );
		}else if( _LC._CK ){
			var cookies = _D.cookie ? _D.cookie.split('; ') : [];
			for( var i = 0; i < cookies.length; i++ ) {
				var parts = cookies[ i ].split( '=' );
				var nm = parts.length && parts.length > 0 ? parts[ 0 ] : '';
				if( nm == name ){
					var val = parts.length && parts.length > 1 ? parts[ 1 ] : '';
					return val ? val : '';
				}
			}
			return undefined;
		}else return undefined;
	}
	
	_LC.setItem = function( name, value ){
		if( _LC._LS ){
			return _W.localStorage.setItem( name, value );
		}else if( _LC._CK ){
			_D.cookie = name + "=" + encodeURIComponent( value ) + "; expires=Tue, 31 Dec 2030 23:59:59 UTC; path=/";
		};
	}	

	_LC.delItem = function( name ){
		if( _LC._LS ){
			return _W.localStorage.removeItem( name );
		}else if( _LC._CK ){
			_D.cookie = name + "=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/";
		};
	}	
		
	_LC.clientID_itemName = 'krlc_' + _LC._ID + '_cid';
	_LC.chatVisible_itemName = 'krlc_' + _LC._ID + '_chv';	
	if( !( _LC.clientID = _LC.getItem( _LC.clientID_itemName ) ) ) _LC.clientID = 0;
		
	_LC.head = _D.head || _D.getElementsByTagName("head")[0];
	if( !_LC.head )
		throw new Error("Cannot get document head element");
		
	_LC._JS = _D.currentScript ? _D.currentScript : _D.querySelector( "script[krl]" ) || _D.querySelector( "script[data-krl]" );
	var src = null, m;
	if( _LC._JS ){
		src = _LC._JS.src; 
		_LC._nonce = _LC._JS.nonce || _LC._JS.getAttribute( "nonce" );
	}else{
		try {
			throw new Error( "Get script URL" )
		}catch( e ){
			var r = e.stack;
			if( r ){
				var i = r.match(/https?:\/\/\S+\/livechat\/\?c=([A-Za-z0-9]+)/);
				src = i ? i[ 0 ] : null;
			}
		}
	}
	if( src && ( m = src.match(/https?:\/\/(\S+)\/livechat\/\?c=([A-Za-z0-9]+)/) ) ){ 
		_LC._URL = _LC.proto() + '//' + m[ 1 ] + '/livechat/';
		_LC.ajaxURL = _LC._URL  + '?w=';
		_C.log( 'nonce: ' + _LC._nonce );
		_C.log( 'URL: ' + src );
		_C.log( 'HOST: ' + m[ 1 ] );
		_C.log( 'ID: ' + m[ 2 ] );
		_C.log( 'URL: ' + _LC._URL );
		_C.log( 'ajaxURL: ' + _LC.ajaxURL );
		_LC.cfgHandler = function( res ){
			_LC._ID = m[ 2 ];
			_LC._CFG = res.cfg;
			_LC.sid = res.sid;
			_LC.clientID = res.cid;
			_LC.setItem( _LC.clientID_itemName, _LC.clientID );
			_LC.psrc = res.psrc;

			_C.log( 'style: ' + res.style );
			_C.log( 'bsrc: ' + res.bsrc  );
			_C.log( 'psrc: ' + res.psrc );
				
			var el = _D.createElement( 'link' );
			el.rel = 'stylesheet';
			el.href = _LC.proto() + res.style;
			_LC.head.appendChild( el );
				
			el = _D.createElement( 'script' );
			el.src = res.bsrc;
			el.type = "text/javascript";
			el.async = !0;
			el.charset = "UTF-8";
			if( _LC._nonce ) el.setAttribute( "nonce", _LC._nonce );
			_LC.head.appendChild( el );
			
			_LC.cfgHandler = null;
			_LC.cfgGet = null;
		};
		_LC.cfgGet = function(){
			_LC.ajaxGET( 'init&c=' + m[ 2 ] + '&cid=' + _LC.clientID, _LC.cfgHandler, function( code, data = '' ){
				_C.error( 'AJAX GET(1) config: [' + code + '] ' +  data );
				code != 4 && _LC.ajaxGET( 'init&c=' + m[ 2 ] + '&cid=' + _LC.clientID, _LC.cfgHandler, function( code, data = '' ){
					_C.error( 'AJAX GET(2) config: [' + code + '] ' +  data );
					setTimeout( _LC.cfgGet, 2000 );
				});
			});
		}
		_LC.cfgGet();
		
	}else _C.error( 'Get script URL' );
}();