Help with hiding or unhiding multiple ranges of rows based on cell value on another sheet

Hello all,

I currently have a macro that auto-filters information on a sheet (Sheet1) based on a drop-down selection. I now need to modify this macro or create an additional macro that will hide two ranges of rows on a second sheet (Sheet2) based on the same drop-down. The current auto-filter is:

Sub DropDown2_Change()

Sheets("Page 2").Range("A9").AutoFilter Field:=1, Criteria1:=Cells(Cells(3, 19).Value, 19).Value

End Sub

Can anyone show me how to modify the above macro to hide rows 100:120 and 160:180 on sheet2 based on the drop-down (value in cell S19) on sheet1?

I'm fairly new to this so any help at all would be greatly appreciated.

Thanks,

Jake