// JavaScript Document

var xmlHttp

function loginPage(str1,str2)
{
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 

         xmlHttp.onreadystatechange=stateChanged;
         xmlHttp.open("GET","LoginPagetest.php?username="+str1+"&password="+str2,true);
         xmlHttp.send(null);
      
}

function stateChanged() 
{ 
if (xmlHttp.readyState==4)
{   
	var JSONtext = xmlHttp.responseText;
	var JSONobject = JSON.parse(JSONtext);   // convert received string to JavaScript object
	
	    if(JSONobject.redirectTo){
		   window.location = JSONobject.redirectTo ;
		   }
		if(JSONobject.errorMessage){
			 document.getElementById("logintxt").innerHTML=JSONobject.errorMessage;
			}
	
}
}

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;
}