jquery-render-tweets with setInterval

function showthemess()
{
	$.ajax({
		type: 'GET',
		url: '/tweets/'+ id,
		data: {'last_tweet' : lasttweet},
		success: function(data){
			lasttweet = data.last_tweet;
			$(function () {
				$("#tweetspanel")
				.renderTweets({
					tweets: data.tweets,
					template: Handlebars.compile($('#tweets-template').html())
				});
			});
		}
	});
}

$(document).ready(function()
{
	var refreshId = setInterval( function() 
	{
		showthemess();
		$("#tweetspanel").renderTweets('refresh');
	}, 5000);
});