var xmlHttpSH
var yrSH
var mkSH
var mdSH
var drSH
var lift
var action

/* show makes */
function showMakeSH(sel)
{
xmlHttpSH=GetXmlHttpObject();
if (xmlHttpSH==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="getmakeSH.asp";
yrSH = sel
url=url+"?y="+yrSH;
url=url+"&sid="+Math.random();
xmlHttpSH.onreadystatechange=stateChangeBSMK;
xmlHttpSH.open("GET",url,true);
xmlHttpSH.send(null);
}


/* show Models */
function showModelSH(sel)
{
xmlHttpSH=GetXmlHttpObject();
if (xmlHttpSH==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="getModelSH.asp";
mkSH = sel
url=url+"?m="+mkSH;
url=url+"&y="+yrSH;
url=url+"&sid="+Math.random();
xmlHttpSH.onreadystatechange=stateChangeBSMD;
xmlHttpSH.open("GET",url,true);
xmlHttpSH.send(null);
}

/* show drive */
function showDriveSH(sel)
{
xmlHttpSH=GetXmlHttpObject();
if (xmlHttpSH==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="getDriveSH.asp";
mdSH = sel
url=url+"?m="+mkSH;
url=url+"&y="+yrSH;
url=url+"&md="+mdSH;
url=url+"&sid="+Math.random();
/*document.write(yrSH);
document.write(mkSH);
document.write(mdSH);*/
xmlHttpSH.onreadystatechange=stateChangeBSDR;
xmlHttpSH.open("GET",url,true);
xmlHttpSH.send(null);
}
/* show lift */
function showLiftSH(sel)
{
xmlHttpSH=GetXmlHttpObject();
if (xmlHttpSH==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="getLiftSH.asp";
dr = sel
url=url+"?m="+mkSH;
url=url+"&y="+yrSH;
url=url+"&md="+mdSH;
url=url+"&dr="+dr;
/*document.write(yrSH);
document.write(mkSH);
document.write(mdSH);
document.write(dr);
document.write(axle);*/
xmlHttpSH.onreadystatechange=stateChangeBSLF;
xmlHttpSH.open("GET",url,true);
xmlHttpSH.send(null);
}
/*submit*/
function formsubSH(sel)
{
xmlHttpSH=GetXmlHttpObject();
if (xmlHttpSH==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  }
var url="getSubmitSH.asp";
lift = sel
url=url+"?m="+mkSH;
url=url+"&y="+yrSH;
url=url+"&md="+mdSH;
url=url+"&dr="+dr;

url=url+"&lift="+lift;
url=url+"&sid="+Math.random();
xmlHttpSH.onreadystatechange=stateChangedSSH;
xmlHttpSH.open("GET",url,true);
xmlHttpSH.send(null);
}

function stateChangeBSMK() 
{ 
if (xmlHttpSH.readyState==4)
{ 
document.getElementById("txtVehsh").innerHTML=xmlHttpSH.responseText;
}
}

function stateChangeBSMD() 
{ 
if (xmlHttpSH.readyState==4)
{ 
document.getElementById("txtModsh").innerHTML=xmlHttpSH.responseText;
}
}

function stateChangeBSDR() 
{ 
if (xmlHttpSH.readyState==4)
{ 
document.getElementById("txtDrivesh").innerHTML=xmlHttpSH.responseText;
}
}



function stateChangeBSLF() 
{ 
if (xmlHttpSH.readyState==4)
{ 
document.getElementById("txtLiftsh").innerHTML=xmlHttpSH.responseText;
}
}

function stateChangedSSH() 
{ 
if (xmlHttpSH.readyState==4)
{ 
document.getElementById("btnSubmit").innerHTML=xmlHttpSH.responseText;
}
}

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