function DetectTierRichCss()
   {
      if ($this->initCompleted == $this->true ||
          $this->isTierRichCss == $this->true)
         return $this->isTierRichCss;

      if ($this->DetectMobileQuick() == $this->true) 
      {
        //Exclude iPhone Tier and e-Ink Kindle devices
        if (($this->DetectTierIphone() == $this->true) ||
            ($this->DetectKindle() == $this->true))
           return $this->false;
           
        //The following devices are explicitly ok.
        if ($this->DetectWebkit() == $this->true) //Any WebKit
           return $this->true;
        if ($this->DetectS60OssBrowser() == $this->true)
           return $this->true;
           
        //Note: 'High' BlackBerry devices ONLY
        if ($this->DetectBlackBerryHigh() == $this->true)
           return $this->true;
        
        //Older Windows 'Mobile' isn't good enough for iPhone Tier. 
        if ($this->DetectWindowsMobile() == $this->true)
           return $this->true;
        if (stripos($this->useragent, $this->engineTelecaQ) > -1)
           return $this->true;
         
        //default
        else
           return $this->false;
      }
      else
         return $this->false; 
   }