Needs to be run from the static/. directory.
For example:

    sizeme_graph.pl daemon

Move all the static files into the DATA section of ths script so the script
is entirely self-contained and doesn't need any static files installed.
Or, work out how to install the static files and reference them from the script.

Make the treemap resize to fit the browser window (as NYTProf does).

Protect against nodes with thousands of children
    perhaps replace all with single merged child that has no children itself
    but just a warning as a title.