changing precedence in font-lock-add-keywords

[sandro.dentella]

Hi,

  i'm trying to customize a mode for cheetah templating system, it is
derived from html-mode and seems pretty simple:

(define-derived-mode cheetah-mode html-mode "Cheetah"
  (make-face 'cheetah-variable-face)
  (font-lock-add-keywords
   nil
   '(
     ("\\(#\\(end \\)?\\(include.*\\|block.*\\|import\\|load\\)\\)" 1
font-lock-builtin-face)
     ("\\(##.*\\)" 1 font-lock-comment-face)
     ("\\(#\\*.*\\*#\\)" 1 font-lock-comment-face)
     ("\\(#\\(from\\|else\\|set\\|import\\|for\\|if\\|end\\)+\\)\\>" 1
font-lock-keyword-face)
     ("\\(<%.*%>\\)" 1 font-lock-keyword-face)
;;
("\\(#\\(from\\|for\\|end\\)\\).*\\<\\(for\\|import\\|if\\|in\\)\\>" 3
font-lock-keyword-face)
     ("\\(\\$\\(?:\\sw\\|}\\|{\\|\\s_\\)+\\)" 1
font-lock-variable-name-face)
   ))
  (font-lock-mode 1)
  )

what I'd like to optain is that the regexp defined here take precedence
over those defined in html-mode. As an example the line with <% %> gets
colored as it would in html but i'd like it to show as a keyword.

Any hints?

TIA
sandro
*:-)