Fixed an array keying error in the 'hummingbird.js' sample js tracker code
Fixed an array keying error in the 'hummingbird.js' sample js tracker code

mnutt/hummingbird,mnutt/hummingbird,mnutt/hummingbird,umaxfun/hummingbird,umaxfun/hummingbird,umaxfun/hummingbird