RZ, tSIHorz
      lHorzOffset = deltaToScrollAmount(lXOffset, m_eHorizontalMode, tSIHorz)
      If Not (lHorzOffset = 0) Then
         bDoIt = True
         If (m_eVerticalMode = eLineBased) Then
            If (lHorzOffset &lt; 32) Then
               If (timeGetTime() - m_lLastHorzTime) &lt; 100 Then
                  bDoIt = False
               Else
                  m_lLastHorzTime = timeGetTime()
               End If
            End If
         End If
         If (bDoIt) Then
            tSIHorz.fMas