//use this to send the data

function returnObjById(id)
{
    if (document.getElementById)
        var returnVar = document.getElementById(id);
    else if (document.all)
        var returnVar = document.all[id];
    else if (document.layers)
        var returnVar = document.layers[id];
    return returnVar;
}

function Change_Prods(response)
{
  //alert(response);

var hello = returnObjById("ajax_form");

hello.innerHTML=response;
}


function build_query(){
 sel_ob = returnObjById("make");
  query = "make="+sel_ob.options[sel_ob.selectedIndex].value;
  //alert(query);
	return query;
	}

function process_xml_response(xml){
	caller = xml.getResponseHeader("ajax_script_name");
	output = xml.responseText;
	//CatId = xml.getResponseHeader("id");
  	
	Change_Prods(output)
	
	}


// JavaScript Document

function createXML()
{
var xmlhttp=false;
if (window.XMLHttpRequest)
	{
  	xmlhttp=new XMLHttpRequest();		
	}
	else{
		try{
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e){
		try{
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
  		}
		catch (E){
			xmlhttp = false;
		}
	}	
}
	if (!xmlhttp && typeof XMLHttpRequest != 'undefined')
	{
	xmlhttp = new XMLHttpRequest();
	}
	return xmlhttp; 
}

function send_query (data_processor,method,query)
{
	
	
	xmlhttp=createXML();
	xmlhttp.open(method, data_processor);
	xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	
		
		xmlhttp.onreadystatechange =function()
		{
		if (xmlhttp.readyState == 4 && xmlhttp.status == 200)
		{
			
			//alert(xmlhttp.responseText);
			process_xml_response(xmlhttp);
			
		}
		}	
	xmlhttp.send(query);
}