orbit-4-1/app/assets/javascripts/page_edit.js

$("div.editable").live("mouseenter mouseleave", function (event) {
  $(this).children('.edit_link').toggle();
});

$("#page_design_id").live('change', function() {
	$.getScript($(this).attr('rel') + '/' + $(this).val() + '/reload_themes');
});