[lalala]

попробуйте так

<script src="/jquery.js"></script>
<script>
				
	$(document).ready(function()
		{
			$('#button_1').click(function()
			{
				$("#ajax").css({"display","block"})
				var name = $("#name").val();
				var mess = $("#mess").val();
				$.ajax({
						type: "POST",
						url: "comm.php",
						data: {name: name, mess: mess},
						success: function(html)
											{
												$("#answer").html(html);
												load_comm();
												id_img.style.display = 'none';
											}
						});
			});
			
			function load_comm()   
			{
				var id = $("#id_article").val();
					$.ajax({   
							type: "POST",
							url: "load.php",
							data: {id: id},
							success: function(html)
												{
													$("#load_comm").html(html);
												}   
						});
			}
		
		});
</script>

<div id="load_comm"> </div>
<div id="answer"> </div>
<form id="add_comm_form">
Имя:<br>
<input type="text" name="name" id="name"><br>
Сообщение:<br>
<textarea rows=5 cols=25 id="mess" name="mess"></textarea><br>
<input type="hidden" id="id" name="id" value="'.abs(intval($id_article)).'">
<input type="button" id="button_1" value="Отправить">
</form>