jquery not working in post

How can I get the following jquery script working in a post?

<script src="/wp-includes/js/jquery/jquery.js" type="text/javascript">// <![CDATA[

(function($) {
var curPH = 1;
$(document).ready(function(){
     reStyle();
$('#phs').css('visibility','visible');
});
     $('#linkZ > a').live('click', function(){
     curPH = $(this).text();
     reStyle();
});
function reStyle(){
     for(var i=0; $('#linkZ > a').length > i;i++){
          if(curPH == $('#linkZ > a:eq('+i+')').text()){
               $('#linkZ > a:eq('+i+')').css('text-decoration', 'underline');
               $('#phs > div:eq('+i+')').fadeIn('normal');
          }else{
               $('#linkZ > a:eq('+i+')').css('text-decoration', 'none');
               $('#phs > div:eq('+i+')').hide();
          }
     }
}
})(jQuery);
// ]]></script>

I have read as much as I could on this forum and other places, and I gather that jQuery is implemented with WordPress by default. I have also checked to see that it is being enqueued in the header of my theme with this line of code:

<?php wp_enqueue_script('jquery'); ?>

I have also tried to wrap the script so that it will be read in no conflicts mode as has been mentioned in this forum.

I am pasting the above code directly into a post. I turned off the editor to ensure that it was not altering my code when I created the post.

I tested the code on the website jquery fiddles, and it functioned there. It also worked on a old joomla sight, so I’m confident the code is valid.

I guess I must be doing something wrong accessing jquery on the site.

I have also tried installing a plugin to use the google hosted jquery library, but didn’t help either.

Can anyone point me to where I have gone wrong. I’ve been at this a couple of days.