Passing variables from JS to WebGL

External references:

• http://stackoverflow.com/questions/4725424/passing-an-array-of-vectors-to-a-uniform
• https://www.khronos.org/webgl/public-mailing-list/archives/1012/msg00091.html
• http://www.khronos.org/message_boards/viewtopic.php?f=35&t=3663
• http://code.google.com/p/angleproject/issues/detail?id=49