Animation sometimes stops before end with IE

I load a hype animation in a div over an other
When the animation start I have this script :

At the end of the animation I have this other script :

The animation disappear so the div above will be clikable
It works fine with alla navigators but with IE sometimes the animation stop before the end and the hide() script is not launched so the above div is not view
Thank you for your help

the animation is visible at this url :
Carmes haut-Brion

I wasn’t able to reproduce the problem; could you better describe where in the animation this is happening? Also it would be useful to know what version of Windows and IE you are using, along with attaching a zip of your .hype document.