Example based on http://threejs.org/examples/webgl_morphtargets_horse
Use number keys 1,2,3,4,5,6 to switch between models.
horse.js, parrot.js, and flamingo.js are from https://github.com/mrdoob/three.js/tree/master/examples/models/animated , and they contain less than 500 vertices.
Three test files are includes that contain 3564, 9752, and 18986 vertices.