var xmlhttp;

function showUser(str)
{
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }
  
 var passwd=document.getElementById("password").value;
 var user=document.getElementById("username").value;

var url="validUser2.php";
url=url+"?v1="+user+"&v2="+passwd;
url=url+"&sid="+Math.random();
xmlhttp.onreadystatechange=stateChanged;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
return true;
}

function stateChanged()
{
if (xmlhttp.readyState==3)
	{
document.getElementById("resultado").innerHTML="Verification....";
	}
if (xmlhttp.readyState==4)
{
document.getElementById("resultado").innerHTML=xmlhttp.responseText;
var respuesta=xmlhttp.responseText;
if(respuesta=="Authentification Valid. Loading...")
	{
document.location.href="http://www.regonline.com/bmwusanews";
	}
}
}

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;
}