Open up a group of images by clicking another element.

[Pixney-William]

Instead of displaying all images and only be able to open a gallery by clicking an image, i would like to be able to open it up by clicking a button/icon for example.

I have a gallery now with 10 images. But i hide 9 of them, and open the group gallery by showing one image. I would actually like to have all 10 images hidden, and use an icon instead that open up the gallery.