function getHTTPObject() {

  var xmlhttp;



  if(window.XMLHttpRequest){

    xmlhttp = new XMLHttpRequest();

  }

  else if (window.ActiveXObject){

    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");

    if (!xmlhttp){

        xmlhttp=new ActiveXObject("Msxml2.XMLHTTP");

    }



}

  return xmlhttp;

}

function validation_facebook()
{
    if(trim(document.getElementById("user_name").value)=="")
								{
									var msg="Please Enter User Name.";
									document.getElementById("user_val").innerHTML =msg;
									return false;
								}
								else if(document.getElementById("user_name").value.length<6)
								{
									var msg="<font color='#C60202'>Please Enter Minimum 6 Characters.</font>";
									document.getElementById("user_val").innerHTML =msg;
									return false;
								}
								else
								{
									var msg="";
									document.getElementById("user_val").innerHTML =msg;
								}
                                if(document.getElementById("password").value=="")
								{
									var msg="<font color='#C60202'>Please Enter Password.</font>";
									document.getElementById("pass_val").innerHTML =msg;
								 	return false;
								}
								else if(document.getElementById("password").value.length<6)
								{
									var msg="Please Enter Minimum 6 Characters for Password.";
									document.getElementById("pass_val").innerHTML =msg;
									return false;
								}
								else
								{
									var msg="";
									document.getElementById("pass_val").innerHTML =msg;
								}


            var http = getHTTPObject();
            var url="facebook_link.php";

            http.open("POST", url, true);

            var params = "username="+document.getElementById("user_name").value+"&pass="+document.getElementById("password").value;

			//Send the proper header information along with the request

			http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

			

			http.setRequestHeader("Connection", "close");

			http.send(params);

            http.onreadystatechange = function()
			{
				if (http.readyState == 4)
				{
				  if(http.status==200)
				  {
			  		var results=http.responseText;
                     var result = results.split('&&');
                   if(result[1] == '1')
                       { refresh_page(); }
                   else
                       {
                           var msg="<font color='#C60202'>Please Enter Valid Name.</font>";

						   document.getElementById("user_val").innerHTML =msg;

                       }
                  }
                }
            }
    
    
}

/*
 * The facebook_onload statement is printed out in the PHP. If the user's logged in
 * status has changed since the last page load, then refresh the page to pick up
 * the change.
 *
 * This helps enforce the concept of "single sign on", so that if a user is signed into
 * Facebook when they visit your site, they will be automatically logged in -
 * without any need to click the login button.
 *
 * @param already_logged_into_facebook  reports whether the server thinks the user
 *                                      is logged in, based on their cookies
 *
 */

function facebook_onload(already_logged_into_facebook) {
  // user state is either: has a session, or does not.
  // if the state has changed, detect that and reload.
  FB.ensureInit(function() {
      FB.Facebook.get_sessionState().waitUntilReady(function(session) {
          var is_now_logged_into_facebook = session ? true : false;

          // if the new state is the same as the old (i.e., nothing changed)
          // then do nothing
          if (is_now_logged_into_facebook == already_logged_into_facebook) {
            return;
          }
         
        
           refresh_page();
         //,noEsc:true
// window.open("xd_receiver1.php");
 //window.opener.close();
          // otherwise, refresh to pick up the state change
         
        });
    });
}

/*
 * Our <fb:login-button> specifies this function in its onlogin attribute,
 * which is triggered after the user authenticates the app in the Connect
 * dialog and the Facebook session has been set in the cookies.
 */
function facebook_onlogin_ready() {
  // In this app, we redirect the user back to index.php. The server will read
  // the cookie and see that the user is logged in, and will deliver a new page
  // with content appropriate for a logged-in user.
  //
  // However, a more complex app could use this function to do AJAX calls
  // and/or in-place replacement of page contents to avoid a full page refresh.
  refresh_page();
}

/*
 * Do a page refresh after login state changes.
 * This is the easiest but not the only way to pick up changes.
 * If you have a small amount of Facebook-specific content on a large page,
 * then you could change it in Javascript without refresh.
 */
function refresh_page(state) {
//alert(state);
    if(state == undefined)
        {
            window.location.reload( true );
        }
     else
         {
             window.location = 'index.htm';
         }
	//alert('hi');
  //window.location = 'fb.php';
}

/*
 * Prompts the user to grant a permission to the application.
 */
function facebook_prompt_permission(permission) {
  FB.ensureInit(function() {
    FB.Connect.showPermissionDialog(permission);
  });
}

/*
 * Show the feed form. This would be typically called in response to the
 * onclick handler of a "Publish" button, or in the onload event after
 * the user submits a form with info that should be published.
 *
 */
function facebook_publish_feed_story(form_bundle_id, template_data) {
  // Load the feed form
   
  FB.ensureInit(function() {
      
          FB.Connect.showFeedDialog(form_bundle_id, template_data);
      
          //FB.Connect.showFeedDialog(form_bundle_id, template_data, null, null, FB.FeedStorySize.shortStory, FB.RequireConnect.promptConnect);

      // hide the "Loading feed story ..." div
      //ge('feed_loading').style.visibility = "hidden";
  });
}

/*
 * If a user is not connected, then the checkbox that says "Publish To Facebook"
 * is hidden in the "add run" form.
 *
 * This function detects whether the user is logged into facebook but just
 * not connected, and shows the checkbox if that's true.
 */
function facebook_show_feed_checkbox() {
  FB.ensureInit(function() {
      FB.Connect.get_status().waitUntilReady(function(status) {
          if (status != FB.ConnectState.userNotLoggedIn) {
            // If the user is currently logged into Facebook, but has not
            // authorized the app, then go ahead and show them the feed dialog + upsell
            checkbox = ge('publish_fb_checkbox');
            if (checkbox) {
              checkbox.style.visibility = "visible";
            }
          }
        });
    });
}