public V get(Object key) {  
        if (key == null)  
            return getForNullKey();  
        int hash = hash(key.hashCode());  
        for (Entry<K,V> e = table[indexFor(hash, table.length)];  
             e != null;  
             e = e.next) {  
            Object k;  
            if (e.hash == hash && ((k = e.key) == key || key.equals(k)))  
                return e.value;  
        }  
        return null;  
    }  
    /** 
     * Offloaded version of get() to look up null keys.  Null keys map 
     * to index 0.  This null case is split out into separate methods 
     * for the sake of performance in the two most commonly used 
     * operations (get and put), but incorporated with conditionals in 
     * others. 
     */  
    private V getForNullKey() {  
        for (Entry<K,V> e = table[0]; e != null; e = e.next) {  
            if (e.key == null)  
                return e.value;  
        }  
        return null;  
    }  

var ObjectStorage = function ObjectStorage( name, duration ) {
	var self,
		name = name || '_objectStorage',
		defaultDuration = 5000;
		
	// дабы не плодить кучу экземпляров, использующих один и тот же ключ хранилища, 
	// просто возвращаем единственный с заданным именем,
	// меняя только duration (если имеется)
	if ( ObjectStorage.instances[ name ] ) {
		self = ObjectStorage.instances[ name ];
		self.duration = duration || self.duration;
	} else {
		self = this;
		self._name = name;
		self.duration = duration || defaultDuration;
		self._init();
		ObjectStorage.instances[ name ] = self;
	}
	
	return self;
};
ObjectStorage.instances = {};
ObjectStorage.prototype = {
	// type == local || session
	_save: function ( type ) {
		var stringified = JSON.stringify( this[ type ] ),
			storage = window[ type + 'Storage' ];
		if ( storage.getItem( this._name ) !== stringified ) {
			storage.setItem( this._name, stringified );
		}
	},

	_get: function ( type ) {
		this[ type ] = JSON.parse( window[ type + 'Storage' ].getItem( this._name ) ) || {};
	},

	_init: function () {
		var self = this;
		self._get( 'local' );
		self._get( 'session' );

		( function callee() {
			self.timeoutId = setTimeout( function () {
				self._save( 'local' );
				callee();
			}, self._duration );
		})();

		window.addEventListener( 'beforeunload', function () {
			self._save( 'local' );
			self._save( 'session' );
		});
	},
	// на случай, если нужно удалить таймаут (clearTimeout( storage.timeoutId ))
	timeoutId: null,
	local: {},
	session: {}
};