compatibility with Google Sites

Has anyone successfully been able to build this Gantt chart into the latest edition of Google Sites offerings? Since for Gadgets was dropped, there is no good offering for project management support that I can find in the Google universe. This tool is fabulous - I think it could make an impact in that space.

If successful, how did you do it? Google’s limitations were pretty stringent, removing most of the cool stuff I tried - and all of the scripts I tried to add.