Variant image previewer


Is there simple they to make product option images with previewer (I mean to enlarge it). As “on click” image is occupied by another function, so may be it is possible to add some extra little sign next to every option image and enlarge it on click. To add sign is not a problem, but I am a bit lost how I can make it to enlarge it.

Must be similar way as product thumbs enlarge…

Any help?