password22

<div class="map">
		<img src="img.png" class="map maphilighted" usemap="#simple">
	</div>

	<map name="simple">
		<area id="first" class="all" shape="poly" coords="78,14,75,29,71,3,20,96,28">
		<area id="second" class="all" shape="poly" coords="73,38,50,4,79,118,62,105,48,95,41">
	</map>

	<div class="data">
        </div>

$(document).ready(function(){
    $('.all').click(function() {
    	var name = ($(this).attr('id')); 
        $.ajax({
			url: 'a.php',
			method: 'post',
			dataType: 'html',
			data: {name:name},
				success: function(data){
					$('.data').html(data);
				}
		});
		return false;
    });
});

if($_POST['name'] == 'first') {
	echo 'Это первый';
} elseif($_POST['name'] == 'second') {
	echo 'Это второй';
}