Modified exp 12, default sound muted and styles
exp11b
Revised for three.js R49
Revert "Revised for three.js R49"

This reverts commit fa1b3ffb474956696ea8adb055026a86ae3050af.
Revert "Revert "Revised for three.js R49""

This reverts commit de4fed93c7c072abd05d0d47dcc05d96312b20ae.
revised jQuery link
tweak
Adjustment
Update three.js to R54
R54
Refine exp12