var xmlHttp

function showManufacturers(str,pos)
{ 
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request")
		return
	}

	if(pos == 1)
	{

		var url="ajax.php"
		url=url+"?s=1&c="+str
		url=url+"&sid="+Math.random()

		document.getElementById('cat').value = str

		document.getElementById("txtHint").innerHTML="<select name='manufacturer' disabled='disabled' class='selects'><option value='0'>Please Wait...</option></select>"
		document.getElementById("txtHint2").innerHTML="<select name='model' disabled='disabled' class='selects'><option value='0'>Select a Manufacturer</option></select>"

	xmlHttp.onreadystatechange=stateChanged1
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)

	}

	if(pos == 1 && str == 0)
	{

		document.getElementById('cat').value = str

	}

	if(pos==2 && str > 0)
	{

		var cat=document.getElementById('cat').value

		var url="ajax.php"
		url=url+"?s=1&m="+str+"&c="+cat
		url=url+"&sid="+Math.random()

		document.getElementById("txtHint2").innerHTML="<select name='model' disabled='disabled' class='selects'><option value='0'>Please Wait...</option></select>"

	xmlHttp.onreadystatechange=stateChanged2
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)

	}

	if(pos==2 && str == 0){

		document.getElementById("txtHint2").innerHTML="<select name='model' disabled='disabled' class='selects'><option value='0'>Select a Manufacturer</option></select>"

	}

}

function stateChanged1() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{

		document.getElementById("txtHint").innerHTML=xmlHttp.responseText

	} 
}

function stateChanged2() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{

		document.getElementById("txtHint2").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;

}