Duplicated code:

• Packer (script & css)
• eZOEAjaxContent (for json encoding and node to json encoding)

By switching to ezjscore following benefits are also gained:

• better javascript packing thanks to jsMin
• makes it easier to switch to jQuery and ditch ez_core.js
• makes it possible to easily be able to rewrite many of the ajax views in ezoe to ezjscore ajax functions, to simplify code and take advantage of speedier execution (by index_ajax.php)