Cannot display treemap greaph

[JuliaCheng]

Hi:

I am studying splunk app framework based on the url : http://dev.splunk.com/view/app-framework/SP-CAAADVF
When I follow the instructions on the documentation, I cannot display the treemap graph of Example6 and Example7.
Please see the attachment. Does any know how to show the graph successfully ? Or Am I missing anything ?

[ghartsel]

These examples currently only render using Firefox. Protovis is know to have some browser issues and a fix is being investigated, including switching to the D3 library.