The problem in Opera is your feature test in slide-deck.js line 762. At the time this part of the code executes, the DOM is not ready yet, so document.body is j

The problem in Opera is your feature test in slide-deck.js line 762. At the time this part of the code executes, the DOM is not ready yet, so document.body is just null and the whole thing fails. It does however work perfectly after executing window.slidedeck = new SlideDeck(); manually.