var xmlHttp

function MandaID(str,areaCombo,campoModelo)
{
nomeDiv = new String(areaCombo);
xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
		alert ("Este browser no suporta HTTP Request")
		return
	}

var url="seleciona_modelo_opiniao.asp" 
url=url+"?fabricante="+str 
url=url+"&campoModelo="+campoModelo 
url=url+"&sidjs="+Math.random()
xmlHttp.open("GET",url,true)
xmlHttp.onreadystatechange=stateChanged
xmlHttp.send(null)
}

function stateChanged()
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		document.getElementById(nomeDiv).innerHTML=xmlHttp.responseText
	}
}


function GetXmlHttpObject()
{
var objXMLHttp=null

	if (window.XMLHttpRequest)
	{
		objXMLHttp=new XMLHttpRequest()
	}
	else if (window.ActiveXObject)
	{
		objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
	}
return objXMLHttp
}