public function attach($observer)
	{
		if (is_array($observer))
		{
			if (!isset($observer['handler']) || !isset($observer['event']) || !is_callable($observer['handler']))
			{
				return;
			}

			// Make sure we haven't already attached this array as an observer
			foreach ($this->_observers as $check)
			{
				if (is_array($check) && $check['event'] == $observer['event'] && $check['handler'] == $observer['handler'])
				{
					return;
				}
			}

			$this->_observers[] = $observer;
			end($this->_observers);
			$methods = array($observer['event']);
		}
		else
		{
			if (!($observer instanceof JObserver))
			{
				return;
			}

			// Make sure we haven't already attached this object as an observer
			$class = get_class($observer);

			foreach ($this->_observers as $check)
			{
				if ($check instanceof $class)
				{
					return;
				}
			}

			$this->_observers[] = $observer;
			$methods = array_diff(get_class_methods($observer), get_class_methods('JPlugin'));
		}

		$key = key($this->_observers);

		foreach ($methods as $method)
		{
			$method = strtolower($method);

			if (!isset($this->_methods[$method]))
			{
				$this->_methods[$method] = array();
			}

			$this->_methods[$method][] = $key;
		}
	}