.slider

.slider

Hi

I got a lil problem using the slider function.
I'd like to use an individual slider and handle; I saw that it was possible to add them using
handle: '..........'
in earlier times.
I allready was able to add them, but sadly the handle can be dragged too far to the right and isn't positioned very well. All in all the whole thing doesn't work smoothly yet.
Could you please check my code and tell me what I did wrong.

http://toptech-dentallabor.de/test/test21.php

Thanks in advance