protected function _getFillURLs() {
		foreach ($this->_fill_urls['keywords'] as $name => $keyword) {
			$content = $this->_getCURL($this->_fill_urls['query'] . $keyword);
			if (isset($this->_fill_urls['to']) && $this->_fill_urls['to'] == 'matches') {
				$url = $this->_filterAll($this->_fill_urls['regex'], $content, 1);
			} else {
				$url = $this->_filter($this->_fill_urls['regex'], $content, 1);
			}
			if (isset($url)) {
				if (! is_integer($name)) {
					$this->_urls[$name] = $url;
				} else {
					$this->_urls[] = $url;
				}
			}
		}
	}