var xmlhttp, xmlhttp2

function muestraprov(str)
{
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  }
var url="combociudades.asp";
url=url+"?reg="+str;
xmlhttp.onreadystatechange=stateChanged;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}

function muestraotr(str)
{
xmlhttp2=GetXmlHttpObject();
var url="combootro.asp";
url=url+"?otr="+str;
xmlhttp2.onreadystatechange=stateChanged2;
xmlhttp2.open("GET",url,true);
xmlhttp2.send(null);
}


function stateChanged()
{
if (xmlhttp.readyState==4)
  {
  document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
  }
}

function stateChanged2()
{
if (xmlhttp2.readyState==4)
  {
  document.getElementById("txtHint2").innerHTML=xmlhttp2.responseText;
  }
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}