UI 1.5.2 - Slider problem on Safari & Chrome

UI 1.5.2 - Slider problem on Safari & Chrome


Hi all,
I have a strange issue on Safari & Chrome ( all works fine in FF /
OPERA / IE )
The context, I use a slider to scroll a div up / down, when I click on
the handle
or the slider directly a have a window JUMP ( like a
window.scrollTo ! ).
the whole window do down one time and I can use the slider normally,
if
I scroll up back the window and retry ... the window jump again.
I have deleted all my callback change / slider / start / stop, still
the same problem.
I have been searching for hours really don't understand the relation
ship between
my slider and the browser window.
any idea ?
Thanks in advance
Jeff