I seen the html client and seems to me to put all the js into a servlet or jsp for tomcat to serve.
Would google code and flash be necessary then?
You seem to have CSS turned off.
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The source code for the prototype web based client is available at http://arianne.cvs.sourceforge.net/viewvc/arianne/stendhal/srcjs/
I don't think that flash or tomcat are relevant here.
Google Code is a hosting platform similar to Sourceforge. socket.io and explorercanvas are open source projects that use the hosting platform Google Code.
P.s. If you want to try the browser based client with IE the best results are with IE9. I've been testing it with Firefox.