var xmlHttp, xmlHttp1, xmlHttp2

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 getInitYears()
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
  
var url;
if(Get_Cookie('yearselect')) {
url="/getyears.aspx?year="+Get_Cookie('yearselect');
} else {
url="/getyears.aspx";
}
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}

function showYear()
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="/getyears.aspx";
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}

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



function getInitMakes()
{
xmlHttpMakes=GetXmlHttpObject();
if (xmlHttpMakes==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url;
if(Get_Cookie('yearselect')) {
url="/getmakes.aspx?year="+Get_Cookie('yearselect')+"&make="+Get_Cookie('makeselect');
} else {
url="/getmakes.aspx?year=";
}
xmlHttpMakes.onreadystatechange=stateChangedMakes;
xmlHttpMakes.open("GET",url,true);
xmlHttpMakes.send(null);
}

function getMakes()
{
cookiedelete();
document.getElementById('make').disabled = true;
document.getElementById('model').disabled = true;
getInitModels();
var selYearIndex = document.getElementById('year').selectedIndex;
var selYearValue = document.getElementById('year')[selYearIndex].value;

xmlHttpMakes=GetXmlHttpObject();
if (xmlHttpMakes==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="/getmakes.aspx";
url=url+"?year="+selYearValue;
xmlHttpMakes.onreadystatechange=stateChangedMakes;
xmlHttpMakes.open("GET",url,true);
xmlHttpMakes.send(null);
}

function stateChangedMakes() 
{ 
if (xmlHttpMakes.readyState==4)
{ 
document.getElementById("txtMakes").innerHTML=xmlHttpMakes.responseText;
}
}



function getInitModels()
{
xmlHttpModels=GetXmlHttpObject();
if (xmlHttpModels==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url;
if(Get_Cookie('yearselect')) {
url="/getmodels.aspx?year="+Get_Cookie('yearselect')+"&make="+Get_Cookie('makeselect')+"&model="+Get_Cookie('modelselect');
} else {
url="/getmodels.aspx?year=&make=";
}
xmlHttpModels.onreadystatechange=stateChangedModels;
xmlHttpModels.open("GET",url,true);
xmlHttpModels.send(null);
}

function getModels()
{
cookiedelete();
var selYearIndex = document.getElementById('year').selectedIndex;
var selYearValue = document.getElementById('year')[selYearIndex].value;
var selMakeIndex = document.getElementById('make').selectedIndex;
var selMakeValue = document.getElementById('make')[selMakeIndex].value;

xmlHttpModels=GetXmlHttpObject();
if (xmlHttpModels==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="/getmodels.aspx";
url=url+"?year="+selYearValue;
url=url+"&make="+selMakeValue;
xmlHttpModels.onreadystatechange=stateChangedModels;
xmlHttpModels.open("GET",url,true);
xmlHttpModels.send(null);
}

function stateChangedModels() 
{ 
if (xmlHttpModels.readyState==4)
{ 
document.getElementById("txtModels").innerHTML=xmlHttpModels.responseText;
}
}



function ValidateMe_Side(theForm)
{
  if (theForm.year.selectedIndex == 0)
  {
    alert("Please select a year");
    return (false);
  }   
  
  if (theForm.make.selectedIndex == 0)
  {
    alert("Please select a make");
    return (false);
  } 
  
  if (theForm.model.selectedIndex == 0)
  {
    alert("Please select a model");
    return (false);
  }  
  
  return(true);
}


function cookieme()
{
var selYearIndex = document.getElementById('year').selectedIndex;
var selYearValue = document.getElementById('year')[selYearIndex].value;
var selMakeIndex = document.getElementById('make').selectedIndex;
var selMakeValue = document.getElementById('make')[selMakeIndex].value;
var selModelIndex = document.getElementById('model').selectedIndex;
var selModelValue = document.getElementById('model')[selModelIndex].value;

Set_Cookie('yearselect', selYearValue, '', '/', '', '' );
Set_Cookie('makeselect', selMakeValue, '', '/', '', '' );
Set_Cookie('modelselect', selModelValue, '', '/', '', '' );
}

function cookiedelete()
{
Delete_Cookie('yearselect', '/', '');
Delete_Cookie('makeselect', '/', '');
Delete_Cookie('modelselect', '/', '');
}

function Set_Cookie( name, value, expires, path, domain, secure ) 
{
// set time, it's in milliseconds
var today = new Date();
today.setTime( today.getTime() );

/*
if the expires variable is set, make the correct 
expires time, the current script below will set 
it for x number of days, to make it for hours, 
delete * 24, for minutes, delete * 60 * 24
*/
if ( expires )
{
expires = expires * 1000 * 60 * 60;
}
var expires_date = new Date( today.getTime() + (expires) );

document.cookie = name + "=" +escape( value ) +
( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + 
( ( path ) ? ";path=" + path : "" ) + 
( ( domain ) ? ";domain=" + domain : "" ) +
( ( secure ) ? ";secure" : "" );
}

// this function gets the cookie, if it exists
function Get_Cookie( name ) {
	
var start = document.cookie.indexOf( name + "=" );
var len = start + name.length + 1;
if ( ( !start ) &&
( name != document.cookie.substring( 0, name.length ) ) )
{
return null;
}
if ( start == -1 ) return null;
var end = document.cookie.indexOf( ";", len );
if ( end == -1 ) end = document.cookie.length;
return unescape( document.cookie.substring( len, end ) );
}

// this deletes the cookie when called
function Delete_Cookie( name, path, domain ) {
if ( Get_Cookie( name ) ) document.cookie = name + "=" +
( ( path ) ? ";path=" + path : "") +
( ( domain ) ? ";domain=" + domain : "" ) +
";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}