var xmlhttp;
function getModels( make ){
	xmlhttp=GetXmlHttpObject();
	if( xmlhttp == null ){
		alert ("This feature is unavailable in your browser.");
		return;
	}
	var url="a/getModels.asp?makeSearch="+make+"&sid="+Math.random();
	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

function stateChanged( ){
	if( xmlhttp.readyState == 4 ){
	  document.getElementById("modelList").innerHTML=xmlhttp.responseText;
	}
}

function GetXmlHttpObject( ){
	if(window.XMLHttpRequest){
	  // code for IE7+, Firefox, Chrome, Opera, Safari
	  return new XMLHttpRequest( );
	}
	if( window.ActiveXObject ){
	  // code for IE6, IE5
	  return new ActiveXObject("Microsoft.XMLHTTP");
	}
	return null;
}