We noticed that the website crashed on certain Safari browser versions. So we got ourselfs a MacBook pro and started testing it. We found that there was an issue in the Safari browsers prior to version 5.x. On these versions the browser crashes due to a Safari bug in the SVG and CSS code. Sadly, we haven't found a real solution except two workarounds.
1: Upgrade your Safari browser to 5.x
2: Let the website detect your Safari browser version and redirect you to the traditional site if needed.
Solution 2 will be implemented in a few days.