Automatic roll power windows

Hey everyone...

I have a 2000 Tacoma that has power windows already. The window switch on the driver's side has the standard up/down function, but also has an automatic roll-down function (you press it once and the window will roll down all the way without having to keep the switch depressed). On the passenger side, it only has the standard up/down switch where the window only moves when you are actually holding the switch.

I've been on a 2000 4-runner that had automatic roll up/down on both driver's and passenger's side... and i thought "why can't my tacoma sport that feature?". Does anyone know of any way to add the feature to the power windows? Do I need to get a switch that will let me do that or do I also have to get internal hardware on the motor, etc? Any advice is appreciated.