<Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 25 </Td> <Td_colspan="1"> August 23, 1998 (1998 - 08 - 23) </Td> <Td> July 26, 1999 (1999 - 07 - 26) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 26 </Td> <Td_colspan="1"> September 28, 1999 (1999 - 09 - 28) </Td> <Td> May 22, 2000 (2000 - 05 - 22) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 25 </Td> <Td_colspan="1"> October 3, 2000 (2000 - 10 - 03) </Td> <Td> May 22, 2001 (2001 - 05 - 22) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 27 </Td> <Td_colspan="1"> September 25, 2001 (2001 - 09 - 25) </Td> <Td> May 21, 2002 (2002 - 05 - 21) </Td> </Tr>

When did that 70s show theme song change