function BeginRequestTime(oS: Session)
{
    if (oS.Timers != null)
    {
        return oS.Timers.ClientBeginRequest.ToString();     
    }
    return String.Empty;
}


 public static BindUIColumn("Time Taken")
           function CalcTimingCol(oS: Session){
             var sResult = String.Empty;
             if ((oS.Timers.ServerDoneResponse > oS.Timers.ClientDoneRequest))
             {
               sResult = (oS.Timers.ServerDoneResponse - oS.Timers.ClientDoneRequest).ToString();
             }
             return sResult;
           }