public function prependCss($asset)
	{
		if(is_array($asset))
		{
			foreach(array_reverse($asset) as $a)
				$this->prependCss($a);

			return $this;
		}

		if( ! $this->isRemoteLink($asset))
			$asset = $this->buildLocalLink($asset, $this->css_dir);

		if( ! in_array($asset, $this->css))
			array_unshift($this->css, $asset);

		return $this;
	}