public function getCss()
	{
		$css = $this->css;
		$options = $this->options;
		if($this->isCombineEnabled())
			$this->combine('css', $css);

		// avoiding duplicate assets
		$css = array_flip(array_flip($css));

		array_walk($css, function(&$value) use($options){
			if(!empty($options['baseUrl'])&&strpos($value,'http://')===false)
				$value = $options['baseUrl'].$value;
		});
		return $css;
	}