Fix TM crash problem

[lgrz]

I seemed to have fixed the crashing issues, and added some more highlighting for javascript. The javascript highlighting is for blocks in the script tag, I've found one case where the highlighting fails, there may be more.

There are also a few other bugs in the highlighting at the moment.

// case where script highlighting fails
!!! 5
  head
    script
      var a = "javascript";
  body

[tj]

awesome, appreciate it!