Image show not loading content - IE and Chrome

Hi, I have an issue with Image show module using IE and Chrome. All the content (text and images) appears and animates correctly the first time I open the home page. When I change page and then I go back to the home page the content does not load and the white point remains in the center of the module. I checked the file permission, the mootools configuration but everything seems fine. Any idea on how to solve it? thank you.

With Firefox is ok.
The message I get from IE is the following:

Messagge: Object expected
Line: 195
Character: 3
Code: 0
URI: http://www.mywebsite.com/templates/gk_c ... .script.js


Messagge: Object expected
Line: 169
Character: 4
Code: 0
URI: http://www.mywebsite.com/templates/gk_c ... ge_show.js

Hi

I'm sending this to our programmer.

Sorry but problems with scripts can occur if you are using back button. We can told that problem exists when it happens on normal refreshed website. In my opinion behaviour described by you isn't a bug.