LocalStorage = new (function() {
	var _supported = "localStorage" in window;
	var _counter = {};

	this.set = function(key, value, persistent) {
		if(_supported) {
			try {
				if(typeof(value) == 'object') {
					value = JSON.stringify(value);
				}
				if(persistent) {
					key = '@' + key;
				}
				if(_counter.lastKey != key) {
					_counter.lastKey = key;
					_counter.count = 1;
				}
				window.localStorage.setItem(key, value);
			}
			catch(e) {
				console.error('LocalStorage', e);
				if(e.name == 'NS_ERROR_DOM_QUOTA_REACHED') {
					Object.keys(window.localStorage).forEach(function(key) {
						if(key[0] != '@') {
							this.remove(key);
						}
					}.bind(this));
					if(_counter.count < 3) {
						this.set(key, value);
					}
				}
			}
			_counter.count = 1;
		}

		return this;
	};

	var _get = function(key) {
		var value = window.localStorage.getItem(key);
		try {
			value = JSON.parse(value);
		}
		catch(e) {}
		return value;
	};

	this.get = function(key) {
		if(_supported) {
			if(window.localStorage.hasOwnProperty('@' + key)) {
				return _get('@' + key);
			}
			else {
				return _get(key);
			}
		}
		return null;
	};

	this.remove = function(key, force) {
		if(_supported) {
			window.localStorage.removeItem(key);
			if(force) {
				window.localStorage.removeItem('@' + key);
			}
		}
		return this;
	};

	this.clear = function() {
		if(_supported) {
			window.localStorage.clear();
		}
		return this;
	};
});