Hi Michael.

@You : "...So to handle that in your event loop in the .js file, look for e == 'minlen' or e == 'maxlen' and trigger an update when you see those events...
Another thing you could try is to remove the call to setInterval and instead put handlers for each slider for onmousemovevaluechange=""..."

Done!

Thanks a lot for suggestion.

Now the script is a little bit faster!

Here's the updated alpha version : http://take.ms/j9tG7

(The checkboxes are still inactive.)

Cheers.

Marco (mkdm)