XML Image Gallery Buttons Refresh

Hi there,

I am asking for some help to figure this out. I am using the XML gallery on a Dental Clinic page to visually explain the stages of the treatments they do (so watch out, some pictures are growse… lol…)
The user chooses one treatment from 8 different options in the block on the left side of the page and the gallery shows on the right side. The problem is on the blue text buttons “caso 1” “caso 2”…right below the gallery that help navigate thorugh the case sudies. They don´t show some times when the user clicks for the first time on some of the buttons of the treatments on the left side but they do appear when the same button is pressed for a second time. It´s like a bad refresh problem. It happens in all browsers and randomly and only in some of the buttons (randomly too).

Could anyone give me a hand to find out what the problem could be please? I am attaching here one of the galleries if that helps as the problem might be on the very first frame but I can´t fix it.

Link to the website:

http://www.pineirosande.com (click on “tratamientos” button on the top left corner)

Thanks a lot.:smirk: