veedo

I just bought (yesterday) a 1996 ES300 (141,822 miles) and my front passenger side window does not go down. it may go up, but i don't know because i have never seen it down. the previous owner says that sometimes it work and sometimes it does not... but so far i got nothing. i tried both the driver side and passenger side controls and nothing. i don't hear any clicks or motor sounds, so i think its the switches. any advice would be greatly appreciated!!! thanks, Veedo