class Core
{
	private $classes = array();

	public function __get ($class)
	{
		if (!in_array($class, $this->classes))
		{
			if (is_file('classes/'.$class.'.php'))
			{
				require_once 'classes/'.$class.'.php';
				$this->classes[$class] = new $class;
				$this->classes[$class]->Core = $this;
			}
			else
			{
				return false;
			}
		}

		return $this->classes[$class];
	}
}