Just a little thinking, I guess making a web version of gideros (understand html5/js) is mostly unreachable target, and I wish I am wrong while saying this.
But making a browser plugin version of gideros player might be an option, along the lines of flash player or java applets.
Firebreath may help to achieve this.
Just a thought however...
Comments
About the browser plugin, then anything that could run Lua VM can become a Gideros player
https://deluxepixel.com
http://paulcuth.me.uk/slides/lua-and-the-web/#intro
Press space to go through the slides...
https://deluxepixel.com