Word wrap the captions under pics?

I have long captions under some of my pics. They are being cut off and ... added. Is there a way I can get my long captions to word wrap? You can see examples here: http://new.stoneimpressions.com/information/tile-murals-in-any-size/ And just in case this matters, I still want all of the other shorter captions to be centered. I tried to find an answer in this forum and with a general Google search, but no luck. Thanks!