slide size

Hello,
I come to you because I have a problem.
I put the posts in open and closed divs (jquery slideToggle).
But when I open the divs, the slide does not fit the size of the div.
You would know this problem?
Is there an “update size” function that I can activate by clicking on the open button?
If you have any idea, I’m interested.
Thank you!

http://ww.wp.xz.cn/plugins/bxslider-integration/