var xmlHttp

function MandaID(str)
{
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
		{
			alert ("Este browser não suporta HTTP Request")
			return
		}
	var url="motor.asp"
	url=url+"?idestado="+str+"&idcidade=3"
	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")
		{
			document.getElementById("exibe_cidade").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
}