Strange: jQuery $(document).ready not executed in pages with different language

Hi everyone,

I installed Entity Translation module along with the Internationalization (i18n) module (v1.11).
I configured the Entity Translation in order to translate Nodes and I made some translations regarding Nodes, Menu Items and Blocks.

The problem is that jQuery $(document).ready function works in English (default language) pages but NOT in Spanish pages for instance.
In Spanish pages, jQuery IS executed but the $(document).ready NOT. For example, a call like "$(".my-item-class").addClass("another-class");" works well.

I followed the guidelines to declare the $(document).ready function in Drupal but its content is never executed. In fact, all Drupal modules that use jQuery $(document).ready function fail in Spanish pages. Although they also follow the guidelines and declare that call (e.g. in Drupal behaviors) the problem appears.

I also tried to change the default language to Spanish, but the problem persists. Only English pages do not have this problem.

My Drupal website controls the language through the URL:

mywebsite.org/my-content-page
mywebsite.org/es/my-content-page

I reviewed Firebug but no error message is shown. jQuery is loaded and the only errors are related with JS that needs some work from code inside $(document).ready calls.

I reviewed jQuery Update but everything seems fine. I am using jQuery 1.7 version.
I also tried with the latest versions of Entity Translation (dev) and i18n (v1.13) but the same error again.

Do you have any idea about what could be the origin of this problem?

Thank you very much.