[quasiman]

Nevermind, I got it...

$(document).ready(function()
{
	$(".country").change(function()
	{
		var dataString = 'id='+ $(this).val();                           
		$.ajax
		({
			type: "POST",
			url: "state.php",
			data: dataString,
			cache: false,
			success: function(html)
			{
				$(".state").html(html);
			} 
		});
	});
	$(".country").change(function() {  // bind a change event:
		$(this).val();
	}).change(); // and trigger a "change" event immediately
});