CSS renderer seems to be broken

[arnuschky]

When running a quick test, two issues appeared:

Line 23428 of caat-css.js:

                    c.timerManager.checkTimers(tt);
                    c.timerManager.removeExpiredTimers();

c is undefined.

Line 25026 of same file:

               var ctx= CAAT.currentDirector.ctx;
               ctx.save();

ctx is undefined

This for commit 8608c93c73e (master head as of 2 July)