Click on one of the photos to display it full size. Hold the tip your your finger close to the screen in front of the image. Slowly bring your finger towards your eyes while keeping your focus on the tip of your finger. At some point, you should find that the photo appears as a 3D (stereo) image.
Vewing Tip 2:
If you're still having trouble viewing these images using the crosseyed method, here's another suggestion. Take a sheet of A4 paper (or similar) and cut a hole approx 35mm square in the centre. Click on one of the photos to display it full size. Hold the paper close to the screen in front of the image. Slowly bring the sheet of paper towards your eyes while focussing on the edges of the hole. At some point, you should be able to see the image in 3D through the hole.