That will then show all images, which is not what @JoSch wants. He wants to show only the first image.
Maybe you can loop through all images, and only put the image tag in for the first image, then hide the links, or something like this.
Another option would be to load the other images via Ajax.
I don’t think we have to go through all that again, because that’s already in the post @JoSch referred to 
.