Well, the first example must be rendered by a server-side script or
something (or just be a approx image, like a network signal icon).

The second is more interesting... It's a background image, and a meter
image. the meter image's size is ajusted by a JavaScript, creating a
variably sized image.

Attached is the source, but modified to be one file (the relevant CSS
and JavaScript is embedded). My comments are in English, whilst the
original comments appear (to me at least) to be German.

On 11 February 2011 23:10, Florian Effenberger
<[email protected]> wrote:
> Hello,
>
> for the Foundation fundraising, I'd also have one page with a donation
> barometer, see the examples at
>
> http://www.erzbistum-koeln.de/export/sites/erzbistum/schule/grundschule_ittenbach/_galerien/bilder/spendenbarometer.jpg
> and
> http://www.labs.orangepointsolutions.com/barometer/
>
> Is there an easy way of automatically generating such an image, e.g. via a
> script, according to the current donation level?
>
> Thanks,
> Florian
>
> --
> Florian Effenberger <[email protected]>
> Steering Committee and Founding Member of The Document Foundation
> Tel: +49 8341 99660880 | Mobile: +49 151 14424108
> Skype: floeff | Twitter/Identi.ca: @floeff
>
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