// JavaScript Document
var xmlHttp;

function callAjax(str){
	if(str=="0"){
		document.getElementById("MODDIV").innerHTML="<select style='width:125px;'><option>Select Car Make First</option></select>";
	}else{
		xmlHttp=GetXmlHttpObject();
		if (xmlHttp==null){
		 alert ("Browser does not support HTTP Request");
		 return;
		}
		var url="includes/svr_getReviewedCarModels.php";
		url=url+"?make="+str;
		xmlHttp.onreadystatechange=stateChanged;
		xmlHttp.open("GET",url,true);
		xmlHttp.send(null);
	}
}

function stateChanged() { 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){ 
		document.getElementById("MODDIV").innerHTML=xmlHttp.responseText;
	} 
}

function GetXmlHttpObject(){
var xmlHttp=null;
try{
 // Firefox, Opera 8.0+, Safari
 xmlHttp=new XMLHttpRequest();
 }catch (e){
 //Internet Explorer
 try{
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }catch (e){
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}