// Ajax JS file.
// Contains all the ajax javascript.
// Copyright (c) 2008 Spartan Technologies Ltd. All rights Reserved.

var xmlHttp

function getModels(str,id)
{ 
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	 {
	 alert ("Browser does not support HTTP Request")
	 return
	 }
	if(str == '')
	{
		document.getElementById("model").disabled = 'disabled';
		document.getElementById("transmission").disabled = 'disabled';
	} else {
		var url="model_select.inc.php"
		url=url+"?q="+str+"&id="+id
		url=url+"&sid="+Math.random()
		xmlHttp.onreadystatechange=stateChanged 
		xmlHttp.open("GET",url,true)
		xmlHttp.send(null)
	}
}

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

function addToQuantity(qtyBoxId)
{
	var qtyBox = "qty[" + qtyBoxId + "]";
	var qty = document.getElementById(qtyBox).value;
	document.getElementById(qtyBox).value = parseInt(qty) + 1;
	document.shoppingCart.submit();
}

function subtractFromQuantity(qtyBoxId)
{
	var qtyBox = "qty[" + qtyBoxId + "]";
	var qty = document.getElementById(qtyBox).value;
	document.getElementById(qtyBox).value = parseInt(qty) - 1;
	document.shoppingCart.submit();
}

function quantityZero(qtyBoxId)
{
	var qtyBox = "qty[" + qtyBoxId + "]";
	document.getElementById(qtyBox).value = 0;
	document.shoppingCart.submit();
}