title: three.js cube: wires show over textures on Safari and Firefox, not Chrome
body: <p>I'm just a 3D newbie, and this is my first experiment with Three.js:</p>
  
  <p><a href="http://www.miguelrivero.net/mainWeb/images/portafolio/exp/BowieNextDay/heroesCoverCube.html" rel="nofollow">http://www.miguelrivero.net/mainWeb/images/portafolio/exp/BowieNextDay/heroesCoverCube.html</a></p>
  
  <p>Any idea why the side textures show these wires?</p>
  
  <p>Thanks!</p>