Gallery works only in chrome

Hi there,

i’m using your plugin for a gallery in my site, in chrome all works perfectly, but not in firefox/explorer.

The first screenshot is on chrome, the second one in firefox

http://i58.tinypic.com/miymxj.png
http://i59.tinypic.com/2m3g580.png

Thank you

https://wordpress.org/plugins/photo-gallery/