var xmlHttp;
var oID = '';

function getPModels(pid,id)
{ 
	oID = id;
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request");
		return;
	}
	var url="getpmodels.php";
	url=url+"?pid="+pid;
	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") {
		if(xmlHttp.responseText)
			document.getElementById(oID).innerHTML=xmlHttp.responseText
	}
}

function stateChanged2() 
{
  if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete") {
		if(xmlHttp.responseText) {
			//document.getElementById(oID).innerHTML=xmlHttp.responseText
      alert(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;
}