Обновление блока по id?

<header>
	<div class="us"></div>
</header>

<script>
	$("#login").submit(function(e) {
		e.preventDefault();
	    $.ajax({
	    	   type: "POST",
	           url: "login.php",
	           data: $("#login").serialize(),
	           success: function(data) {
					$('.us').html(data);
			   }
	         });

	});
</script>

<div class="mod">
<form id="login">
	<input type="login" name="login">
	<input type="password" name="password">
	<input type="submit" name="submit">
</form>
</div>