Horseracing

[clowntable]

Does any of you happen to know how horseracing odds are calculated in France?
I have a racetrack 10 minutes from where I live but still haven't figured out how it works [img]/images/graemlins/wink.gif[/img]
All my googling made me wonder if there is actually some logic behind this madness. The generall horseracing odds were understandable, but well. I can't provide any further information but next time I go I'll get pen and paper and write down what I think how it works.