/**
  *  下载指定网址
  *
  * @access    public
  * @param     string  $dourl  下载地址
  */
 function DownOnePage($dourl)
 {
     /* 
     		$this->cHttpDown->OpenUrl($dourl);
             $html = $this->cHttpDown->GetHtml();
             $this->cHttpDown->Close();
     */
     $Snoopy = new Snoopy();
     $Snoopy->fetch($dourl);
     $html = $Snoopy->results;
     $Snoopy->Close();
     $this->ChangeCode($html);
     return $html;
 }