Various deprecated incompatibilities with "Angua" release

[dankirkd]

"Angua" replaced a number of JavaScript functions with JQuery functions. As a result it spits the following out to a Firebug console when highlighting a section to be edited:

DEPRECATED function call addInitEvent(). Use jQuery() instead

Furthermore the means to highlight the "next" section, as opposed to the "previous" one is now controlled by a JQuery sectionHighlight function in page.js. It is unclear how to convert this as previously done to the addInitEvent in script.js.