(require 'multi-web-mode)

(setq mweb-default-major-mode 'html-mode)

(setq mweb-tags '((js-mode "<script[^>]*>" "</script>")))

(setq mweb-filename-extensions '("htm" "html"))

(multi-web-global-mode 1)

(add-to-list 'auto-mode-alist '("\\.js\\'" . js2-mode))