The trailer for the comedy-drama It's Kind of a Funny Story has gone online.  The film stars Keir Gilchrist as a stressed-out teenager who checks himself into a mental institution for five days and learns valuable life lessons while there.  The film co-stars Zach Galifianakis, Emma Roberts, Lauren Graham, Viola Davis, and Jim Gaffigan.

Hit the jump to check out the trailer.  It's Kind of a Funny Story opens in limited release on September 24th.

Click over to Yahoo! Movies to see the trailer in HD.

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Here's the official synopsis for It's Kind of a Funny Story:

Stressed out from the demands of being a teenager, 16-year-old Craig checks himself into a mental health clinic. There he learns that the youth ward is closed and finds himself stuck in the adult ward. One of the patients, Bobby, soon becomes both Craig's mentor and protege. Craig is also drawn to another 16-year-old, Noelle. With a minimum five days' stay imposed on him, Craig is sustained by friendships on both the inside and the outside as he learns more about life, love, and the pressures of growing up.

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