4.1 Javascript: Pop-ups On Mouse Over
  4.1.1 Background
  4.1.2 End Points of the Jobname-js.tex File
  4.1.3 Configuration Commands
  4.1.4 Footnotes Contributions
  4.1.5 Overlib
  4.1.6 Boundary Cases for mouseover
  4.1.7 The Configuration File onmouseover.4ht