OpenSCAD polygon editor (single HTML file)

I'm making extensive use of OpenSCAD. The only problem I found is that the polygon function is hard to use. I rather draw my polygons visual. So I created a simple polygon editor for OpenSCAD in Javascript+HTML.

Following the idea from the "OpenScad Polygon Generator" by "PieterBos" http://www.thingiverse.com/thing:9290
But then working for any OS, any browser, without fuss. You don't even need to install anything! (might even work in mobile browsers)

Online version can be found at:
http