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;
}




function checklogin(str)
{

	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null) {
		  alert ("Browser does not support HTTP Request");
		  return;
	  } 
	var username = document.loginForm.login.value;
	var password = document.loginForm.password.value;

	var url="../../templates/register.php";
	url=url+"?username="+username;
	url=url+"&password="+ password;
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);

} 

function logout()
{
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
	  {
		  alert ("Browser does not support HTTP Request");
		  return;
	 } 
	var url="../../templates/logout.php";
	xmlHttp.onreadystatechange = stateChanged_logout;
//	alert(url);
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function stateChanged_logout() 
{

if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
	var j = xmlHttp.responseText;
	document.getElementById("error").innerHTML= " ";
	document.getElementById("guest").innerHTML= " ";
	document.loginForm.login.value = "login";
	document.loginForm.password.value = "password";

if (document.getElementById("login_section")!=null)
	document.getElementById("login_section").style.display="block";

if (document.getElementById("apartment")!=null)
document.getElementById("apartment").style.display="block";

if (document.getElementById("guest")!=null)
document.getElementById("guest").innerHTML= "Guest Login or Join, My Profile | My Favorites | My Alerts"; 

	if (document.getElementById("login_form")!=null)		
	document.getElementById("login_form").style.display="block";


}
	
}


function stateChanged() 
{ 
var username = document.loginForm.login.value;
var password = document.loginForm.password.value;

if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 	 
	 var j = xmlHttp.responseText;
	 
	 if(j == 0)
	 {
	 	 document.getElementById("error").innerHTML= "Please enter correct username and password.";
		 login.message += 'sdsa is required. ';
	 }
	 else {

	 if (document.getElementById("error")!=null)
	document.getElementById("error").innerHTML= username;

	 if (document.getElementById("login_section")!=null)
	document.getElementById("login_section").style.display="none";
	
	 if (document.getElementById("apartment")!=null)
	 document.getElementById("apartment").style.display="none";

	if (document.getElementById("showTable")!=null)	 	 	
	document.getElementById("showTable").style.display="none";

	if (document.getElementById("showList")!=null)
	document.getElementById("showList").style.display="none";
	 
	if (document.getElementById("viewprop")!=null)
	document.getElementById("viewprop").style.display="none";

	if (document.getElementById("insert_response")!=null)
	document.getElementById("insert_response").style.display="none";

	if (document.getElementById("vertical_view_div")!=null)
	document.getElementById("vertical_view_div").style.display="none";

	if (document.getElementById("grid_view_div")!=null)
	document.getElementById("grid_view_div").style.display="none";

	if (document.getElementById("join_purdue")!=null)
	document.getElementById("join_purdue").style.display="none";


	if (document.getElementById("advlisting")!=null)
	document.getElementById("advlisting").style.display="none";

	if (document.getElementById("login_form")!=null)		
	document.getElementById("login_form").style.display="none";


	if (document.getElementById("left_panel")!=null)
	document.getElementById("left_panel").style.display="block";

 	if (document.getElementById("error")!=null)
	document.getElementById("error").innerHTML= " ";

	if (document.getElementById("guest")!=null)
	document.getElementById("guest").innerHTML= " ";

	if (document.getElementById("guest")!=null);
	document.getElementById("guest").innerHTML= "Welcome User : " + username + " | <a style='cursor:pointer' onClick=logout()>Logout</a> | My Profile | My Favorites | My Alerts";
	 
	 
	 		// document.getElementById("register_your_property").innerHTML= " ";
		 //document.getElementById("register_your_property").innerHTML= " <a href='Modules/propertymanager/rent_your_property.php'>Rent Your Property</a>";
		 
		 //document.getElementById("add_apartment").innerHTML= " ";
		 //document.getElementById("add_apartment").innerHTML= " <a href='Modules/propertymanager/add_apartment.php'>Add Apartment</a>";

		// document.getElementById("post_vacancies").innerHTML= " ";
//		 document.getElementById("post_vacancies").innerHTML= " <a href='Modules/propertymanager/post_vacancies.php'>Post Vacancies</a>";

		// document.getElementById("sponsored_listing").innerHTML= " ";
//		 document.getElementById("sponsored_listing").innerHTML= " <a href='Modules/propertymanager/sponsored_listing.php'>Sponsored Listing</a>";

		// document.getElementById("helpandsupport").innerHTML= " ";
//		 document.getElementById("helpandsupport").innerHTML= " <a href='Modules/propertymanager/helpandsupport.php'>Help & Support</a>";
//		 
//		 document.getElementById("editproperties").innerHTML= " ";
//		 document.getElementById("editproperties").innerHTML= " <a href='index.php' onclick='prop_table();'>Add & Edit Properties</a>";
//		 document.getElementById("editproperties").innerHTML= " <a href=Modules/propertymanager/editproperties.php?username=" + username + ">Add & Edit Properties</a>";

	 
	 }	 
 } 
}