What is the mce portions all about?
<script src="jquery-1.2.1.pack.js" type="text/javascript"><!--mce:0--></script><script type="text/javascript"><!--mce:1--></script>
They're probably part of some template or whatever you grabbed that markup from. They're just HTML comments, so they don't actually do anything themselves.
Is it from a Joomla! site? I've seen code like that in some Joomla! templates. I usually just remove it.
Sorry, forgot to leave the link. Shouldn't this line reference rpc.php. I feel like this site is leading me nowhere. Was checking out the jQuery UI autocomplete method a little last night too. Anyone else have suggestions? I actually want to autocomplete without having to query upon keystrokes by loading possible values from a query first instead.
http://www.nodstrum.com/2007/09/19/autocompleter/
Quite possibly the HTML was written using the TinyMCE "WYSIWYG" editor. It tends to leave little "mce" tags all around and break my validation 😉
That said, I've never seen that exact tag; usually I see
<a href="foo" mce-href="foo">
...
