With Ticket 1014, effects are only callable from callbacks such that :complete=>"new Effect.Highlight(element)"
However, when using code like this with an addition form
<%= form_remote_tag :url=>{:action=>'create'},
:update=>'myelement',
:position=>'before',
:complete=>'new Effect.Highlight(\'myelement\');' %>
the problem arises that
(a) element "myelement" is not the actual element that we're updating (we're adding to the DOM *before* this element) and
(b) its not actually possible to know what we just added because there's no ID for the new DOM element, and no way to retrieve the id, if one was even set.
This is why we need 'effect' to be a callback from the actual Insertion functions and applied to the new DOM element.