eye blinking script

I've done a search already, and nothing has really come up. I understand that there is a freebie script out there that will animate a texture to perform a blinking animation. I have a blink script that takes a sphere and halves it, making it appear to blink, however the problem is that it does not sync very well with the other eye.

Is the animated texture version the way to go? Or will I still have problems with synchronization?

to my knowledge, animated textures using the same texture are automatically in sync because it starts as soon as the texture downloads. probably not relevant, but i dunno what impact 2 different anim styles would do to the synchronization