three.js: Three.js not showing in WebKit Browser (Chrome, Safari)

Hi!

When I’m open http://mrdoob.github.com/three.js/examples/webgl_panorama_equirectangular.html in Chome 13.0.782.107 or Safari Version 5.0.5 (6533.21.1) on a Mac OSX 10.6.7 I get the the following errors:

Three.js:294:: Error creating WebGL context.
Three.js:294:: Uncaught TypeError: Cannot call method 'clearColor' of null
Three.js:294:: THREE.WebGLRenderer
webgl_panorama_equirectangular.html:66:: init
webgl_panorama_equirectangular.html:49:: (anonymous function)

When I open it in Firefox 5.0.1 everything is fine. Does someone can confirm this issue?

Thanks!