Iframe does not stop loading

[Palido]

Hi,

 

we created an online shop with Prestashop and now we use Joomla and integrate our Prestashop with Iframes in our Joomla Site.

 

Now when i click a categorie and want to change to site 2 to show the next products, the iframe does not stop loading (like the attached image). Sometimes the rest of the site jumps up and down.

 

http://www.palido.com/schmuck/kollektion/2014-07-04-08-39-55 - if you click on site 2,3 or 4 you can see the on top of all articles the loading circle won't go away

 

Has somebody an idea what I can do, to solve this?

 

Regards,

Palido