GDirections not working in Walking mode

http://tinyurl.com/2a8446e

It works fine in driving mode, but when you change this:

var dirn_opts = {getPolyline: true,
//travelMode: G_TRAVEL_MODE_WALKING,
getSteps: false}

to this:

var dirn_opts = {getPolyline: true,
travelMode: G_TRAVEL_MODE_WALKING,
getSteps: false}

it doesn't work anymore. Any ideas why? I have the GDirections object
initialized with a DOM for the safety warning... I don't know what
else could be hanging things up.

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