function BlockDisplayer(id, texts) {
	this.id = id;
	this.cookies = new CookiesWrapper(document.cookie, 365 * 24 * 60 * 60 * 1000);
	this.texts = texts;
	
	this.restore = restoreBlockVisibility;
	this.switchVisibility = switchBlockVisibility;
	this._isVisible = _isBlockVisible;
	this._changeVisibility = _changeBlockVisibility;
}

function switchBlockVisibility() {
	this._changeVisibility(1 - this._isVisible());
}

function restoreBlockVisibility() {
	this._changeVisibility(this._isVisible());
}

function _isBlockVisible() {
	return this.cookies.get(this.id) != '0' ? 1 : 0;
}

function _changeBlockVisibility(visibility) {
	this.cookies.set(this.id, visibility);
	document.getElementById(this.id + '_block').style.display = visibility ? 'block' : 'none';
	document.getElementById(this.id + '_link').innerHTML = this.texts[visibility];
}