Why are you using WebGL for this with no other option? I am using Chrome because it is infinitely faster than Firefox. I get the following message from your site:
Error constructing CesiumWidget. Visit http://get.webgl.org to verify that your web browser and hardware support WebGL. Consider trying a different web browser or updating your video drivers. Detailed error information is below:
RuntimeError: The browser supports WebGL, but initialization failed. Error at new t (http://rg-60c3.kxcdn.com/bundle-792cb1b42393ce14840f.js:13:1700) at new B (http://rg-60c3.kxcdn.com/bundle-792cb1b42393ce14840f.js:37:3393) at new ce (http://rg-60c3.kxcdn.com/bundle-792cb1b42393ce14840f.js:36:6010) at new e (http://rg-60c3.kxcdn.com/bundle-792cb1b42393ce14840f.js:32:898) at t.e.value (http://rg-60c3.kxcdn.com/bundle-792cb1b42393ce14840f.js:10:9355) at t.e.value (http://rg-60c3.kxcdn.com/bundle-792cb1b42393ce14840f.js:9:21370) at e.notifyAll (http://rg-60c3.kxcdn.com/bundle-792cb1b42393ce14840f.js:5:4913) at r.h.close (http://rg-60c3.kxcdn.com/bundle-792cb1b42393ce14840f.js:7:12663) at r.o.closeAll (http://rg-60c3.kxcdn.com/bundle-792cb1b42393ce14840f.js:5:8329) at r.o.perform (http://rg-60c3.kxcdn.com/bundle-792cb1b42393ce14840f.js:5:7818)
While your browser seems to support WebGL, it is disabled or unavailable.
I tried to enable WebGL and found that it was only experimental for application development:
chrome://flags
WebGL 2.0 Prototype Mac, Windows, Linux, Chrome OS, Android
Enabling this option allows web applications to access the experimental WebGL 2.0 feature. This option should only be used for application development, and should not be used when browsing arbitrary web sites. #enable-unsafe-es3-apis
So I am required to enable something that is warned against just to be able to use a single site. Not exactly what I would consider user friendly…