Colleague Noel O’Boyle has already reported it: There is now an open collection of javascript-based chemistry components for the web, called ChemDoodle, released under GPL license by iChemLabs, inc. The stuff looks really neat.
The collection comprises viewers, an editor, a look-up component (try entering accession numbers such as “1″, “2″ or “3″ (you get the point?)) and more. The interesting part is that no java applet needs to be loaded and things are supported by the browser directly. This does not mean that they didn’t have to go through a hell of compatibility testing.

very cool & good code, thank you very much for sharing.
Some similar JavaScript, 3D Movements
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