I can't play with Chrome or Firefox (Mac Os), I don't see the illustrations, just violet square or silhouettes of the elements.
That sucks, I'm sorry to hear that. I don't have a Mac myself, I had a friend try it out on his and it worked fine in Chrome, Firefox & Safari. Make sure you've got the latest updates first. Something you can try that might give me some kind of error-message is if you, in Firefox, right-click on the page and choose "Inspect Element". The page should split and show info on the right, at the bottom should be an error log. Reply with any error messages you have there and I'll see what I can figure out.