jQuery won't work with Wordpress

[treeleaf20]

All,
I have the following bit of code:

<script type="text/javascript">
$(document).ready(function() {
var url='http://search.twitter.com/search.json?callback=?&q=test';
 	$.getJSON(url,function(json){
		$.each(json.results,function(i,review){
			if(i==1){
			$("#reviews").html('<div id=reviewnum'+i+'><b>'+review.text+'</b><br>Reviewed By: '+review.from_user+'</div>');
			//$("#reviews").append('<div id=reviewnum'+i+'>'+review.text+'</div>');
			}else{
			$("#reviews").append('<div id=reviewnum'+i+'><b>'+review.text+'</b><br>Reviewed By: '+review.from_user+'</div>');
			$("#reviewnum"+i).hide();
			}
		});
	});
});

function rotatereview(){
	var number_id = 2;
	var old_number_id;
	var refreshId = setInterval(function() {
		if(number_id==6){
		old_number_id = number_id - 1;
		$("#reviewnum"+old_number_id).hide("slow");
		number_id = 1;
		$("#reviewnum"+number_id).show("slow");
		}else{
		if(number_id==1){		
      	$("#reviewnum"+number_id).show("slow");
		}else{
		old_number_id = number_id - 1;
		$("#reviewnum"+old_number_id).hide("slow");
		$("#reviewnum"+number_id).show("slow");
		}
		}
		number_id++;
  	 }, 5000);
  	 $.ajaxSetup({ cache: false });
}
rotatereview();
</script>

This code runs at the header or footer (I've tried at both places) of one of my wordpress template pages. The json never gets called to populate the div. I do have the div on my page so it isn't missing but that part works fine.

I looked and wordpress looks like it's trying to load the following jquery:
<script type='text/javascript' src='http://localhost/wordpress/wordpress/wp-includes/js/jquery/jquery.js?ver=1.6.1'></script>

I'm not sure why my jquery won't work with this? Can anyone give me any ideas?

Thanks in advance!

[felgall]

Perhaps your code is conflicting with other code already in the page.

[treeleaf20]

I'm not sure why, but if I changed $ to jQuery it works good.

[SB65]

Here's the explanation:

http://codex.wordpress.org/Function_...flict_wrappers

I always manually add jQuery to the Wordpress header.php to avoid this sort of thing - never had any problems using this approach.