question about problem with product card

[zarek36]

Greetings,
I have a request to make about some inconvenience.
I use Prestashop 1.31 and ddlc_presta_green_planet
In the moment of showing the product's card under the main photo there are shown the miniatures of other photos.
After directing the cursor over this photo, it is loaded in the window above, but when doing it for the first time there is
and effect of "disappearing-dimnishing" of main window with photo for a twinkle time.
Then the area below, I mean "in the same category" and "more informations" jump higher about 5cm creating
unconvenient situation.

Could you tell me how to make the window _still_, so it wouldn't change the size while loading new photo?
The url of my unfinished web page: www.leder.pl

I've seen this problem on several web sites of differents shops (prestashop)

thanks for every advice

[razaro]

Try to add this code to global.css

div#image-block {
height:300px;
width:302px;
}