Problem solved. The width of slider’s container must be set to 100%. I had defined only the width of the container’s parent 1152px before.
But anyway I’m curious it works without setting the container’s width in Chrome, but not in firefox. 🙂
Also this one only works in Chrome:
<div style=”width:1152px”>
<div>
// slider here
</div>
</div>
But this one works both in chrome and firefox:
<div style=”width:1152px”>
<div style=”width:100%”>
// slider here
</div>
</div>