public function addStyleDeclaration($content, $type = 'text/css')
	{
		if (!isset($this->_style[strtolower($type)]))
		{
			$this->_style[strtolower($type)] = $content;
		}
		else
		{
			$this->_style[strtolower($type)] .= chr(13) . $content;
		}

		return $this;
	}