var xmlHttp

function showModels(str)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="getmodels.asp";
url=url+"?q="+str;
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}

function DisplayModels(str,nType)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
    var url="getmodelsInTables.asp";
    url=url+"?q="+str;
    url=url+"&type="+nType;
    url=url+"&sid="+Math.random();
    xmlHttp.onreadystatechange=stateChanged;
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
}

function DisplayMakes(str)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  }  
    var url="getmakesInTables.asp";
    url=url+"?q="+str;
    url=url+"&sid="+Math.random();
    xmlHttp.onreadystatechange=MarksStateChanged;
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);    
}

function AdvancedSearch()
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  }  
    var url="AdvancedSearch.asp"; 
    url=url+"?sid="+Math.random();   
    xmlHttp.onreadystatechange=SearchStateChanged;
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);    
}

function BasicSearch()
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  }  
    var url="BasicSearch.asp"; 
    url=url+"?sid="+Math.random();   
    xmlHttp.onreadystatechange=SearchStateChanged;
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);    
}


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

function MarksStateChanged() 
{ 
    if (xmlHttp.readyState==4)
    { 
        document.getElementById("make").innerHTML=xmlHttp.responseText;
        var strElement="<select name=\"vmodel\"size=\"1\" disabled=\"disabled\" style=\"width:173px;\">";
        strElement=strElement+" <option value=\"0\">All</option> </select>";
        document.getElementById("model").innerHTML = strElement;
    }
}

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