Jsar lets you create javascript/dhtml animations in a WYSIWYG way, without any prior knowledge of javascript or dhtml. Just use the timeline at the bottom to add new keyframes, the resulting motion of each animation object will be the linear interpolation of object's position in two successive key frames.
Once you have finished your animation use "Generate Player" to generate a simple html file with the animation code, you can use/edit the javascript code in this file to add the animation to your webpages.
Jsar itself is a javascript/dhtml application and runs in Firefox 1.5.x and Mozilla Camino, it doesn't work with IE6. The animation exported with "Generate Player" seems to work under IE6, too. Compatibility of Jsar with any other browser is currently unknown.
See tests/test.html for an exported animation example.
The interpolation function can be modified, see step_function.txt for some (rather lame) user defined interpolation functions. Note that this feature can be exploited to make more advanced animations.
Jsar is released under the BSD license, see COPYING.txt
You can:
Have fun.