function findDealer() { 
       var acity = $('#acity').val();
		$.get(
			"getDealer.php?acity="+acity,
			{language: "php", version: 5},
			function(responseText){
				$("#maincontent").html(responseText);
			},
			"html"
		);
	return false; 
}


$(document).ready(function(){
	$("#acity").change(findDealer);
});

$(window).load(findDealer);