// JavaScript Document
var xmlHttp

function showprovincias(pais)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 

if( pais == 29 )
	document.getElementById("lbl_provincias").innerText = "Estado";	
else
	document.getElementById("lbl_provincias").innerText = "Provincia";	

if( pais == 18 )
	document.getElementById('tr_colonia').style.display = 'block';
else
	document.getElementById('tr_colonia').style.display = 'none';

var url="getprovincias.php";
url=url+"?pais="+pais;
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}

function stateChanged() 
{ 
if (xmlHttp.readyState==4)
{ 
document.getElementById("div_provincias").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;
}