//http://javascript.about.com/library/blmodald2.htm
  var actDialog = null;

  function modalDialog(overlay, dialog, top) {
    this.overlay = $('#' + overlay); this.overlay.css('display', 'none');
    this.dialog = $('#' + dialog); this.dialog.css('display', 'none');
    this.dialogTop = typeof (top) == 'undefined' ? 30 : top;
    if (actStatus.forceLogin) this.show();
  };

  modalDialog.prototype = {
    show: function() {
      actDialog = this;
      var b = 'block'; var p = 'px';
      var win = $(window);
      this.overlay.css({ 'height': win.height() + p, 'width': win.width() + p, 'top': win.scrollTop() + p, 'left': win.scrollLeft() + p, 'display': b });
      this.dialog.css({ 'top': this.dialogTop + win.scrollTop() + p, 'display': b });
      $('select,iframe,object').css('visibility', 'hidden');
      win.bind('scroll.modalDlg', function() {
          actDialog.overlay.css({ 'top': $(window).scrollTop() + 'px', 'left': $(window).scrollLeft() + 'px' });
          //actDialog.dialog.css('top', actDialog.dialogTop + $(window).scrollTop() + 'px');
      });
      win.bind('resize.modalDlg', function() {
          actDialog.overlay.css({ 'height': $(window).height() + 'px', 'width': $(window).width() + 'px' });
      });
    },
    hide: function() {
      this.overlay.css('display', 'none');
      this.dialog.css('display', 'none');
      $('select,iframe,object').css('visibility', 'visible');
      $(window).unbind('.modalDlg');
      actDialog = null;
    }
  };
  
  _Lib = function () {
    if (actStatus.site=='com') {
      this.csUrl = (actStatus.country=='cz') ? 'http://vyuka.lide.cz/' : 'http://www.langmaster.com/lmcom/com/web/cs-cz/pages/online-jazykova-skola-zdarma.aspx';
    } else if (actStatus.site=='org') {
      this.csUrl = (actStatus.country=='cz') ? 'http://www.eduland.cz' : 'http://www.langmaster.org/lmcom/org/web/cs-cz/pages/bezplatna-jazykova-akademie.aspx';
    }
    this.skDisplay = (actStatus.country=='sk' || actStatus.country=='cz') ? 'none' : 'inline';
  }; 
  
  _Lib.prototype = {
    adjustLangPanel : function () {
      $('#lt_sk_sk,#locrun_sk_sk').css('display',this.skDisplay);
      $('#lta_cs_cz,#locruna_cs_cz').attr ('href', this.csUrl);
    },
    navigateFBApp : function (url) {
      window.location.href = url;
    },
    navigateFBAppTop : function (url) {
      window.top.location.href = url;
    }
  };
  
  Lib = new _Lib ();


  _FBLib = function () {
    this.isFacebook = function () {
      return actStatus.isAuthenticated && actStatus.server=='facebook';
    };
    this.isInFacebookIFrame = function () {
      return $('body').hasClass('fb-iframe');
    };
    this.homes = {'French':'http://www.facebook.com/login.php?api_key=c4bf4a412496a3af14993c3b4ce57b0e&canvas&v=1.0','Italian':'http://www.facebook.com/login.php?api_key=2d8e434328fc37bbaff4c7ddb78648bd&canvas&v=1.0','Spanish':'http://www.facebook.com/login.php?api_key=6bc25c239eea8a76562671814e394d8b&canvas&v=1.0','German':'http://www.facebook.com/login.php?api_key=5ab309efeb625d9a9423ecd653f270c1&canvas&v=1.0','English':'http://www.facebook.com/login.php?api_key=4354ead318e96b39eee16b181e9d7aa9&canvas&v=1.0'}; //urls FB aplikaci pro kurzy
    this.appKeys = {'French':'c4bf4a412496a3af14993c3b4ce57b0e','Italian':'2d8e434328fc37bbaff4c7ddb78648bd','Spanish':'6bc25c239eea8a76562671814e394d8b','German':'5ab309efeb625d9a9423ecd653f270c1','English':'4354ead318e96b39eee16b181e9d7aa9'}; //key FB aplikaci pro kurzy
    this.xd_receiverUrls = {'French':'/LMCOM/com/web/cs-cz/pages/facebook/French/xd_receiver.aspx','Italian':'/LMCOM/com/web/cs-cz/pages/facebook/Italian/xd_receiver.aspx','Spanish':'/LMCOM/com/web/cs-cz/pages/facebook/Spanish/xd_receiver.aspx','German':'/LMCOM/com/web/cs-cz/pages/facebook/German/xd_receiver.aspx','English':'/LMCOM/com/web/cs-cz/pages/facebook/English/xd_receiver.aspx'}; //URL adresy xd_receiver pro kurzy
    this.feeds = { 'default':{'French':133944979339,'Italian':134744627939,'Spanish':136785105901,'German':135697064595,'English':146403702376} }; //ids feeds story pro kurzy 
    this.feedsPar = { 'default':{'images':[{'src':'http://www.langmaster.com/lmcom/App_Themes/site/img/ico-English-com.png','href':'http://www.facebook.com/login.php?api_key=4354ead318e96b39eee16b181e9d7aa9&canvas&v=1.0'},{'src':'http://www.langmaster.com/lmcom/App_Themes/site/img/ico-German-com.png','href':'http://www.facebook.com/login.php?api_key=5ab309efeb625d9a9423ecd653f270c1&canvas&v=1.0'},{'src':'http://www.langmaster.com/lmcom/App_Themes/site/img/ico-Spanish-com.png','href':'http://www.facebook.com/login.php?api_key=6bc25c239eea8a76562671814e394d8b&canvas&v=1.0'},{'src':'http://www.langmaster.com/lmcom/App_Themes/site/img/ico-Italian-com.png','href':'http://www.facebook.com/login.php?api_key=2d8e434328fc37bbaff4c7ddb78648bd&canvas&v=1.0'},{'src':'http://www.langmaster.com/lmcom/App_Themes/site/img/ico-French-com.png','href':'http://www.facebook.com/login.php?api_key=c4bf4a412496a3af14993c3b4ce57b0e&canvas&v=1.0'}]} }; //ids feeds story pro kurzy 
    this.logoutLink_UniqueID = ''; //UniqueId buttonu pro postback v pripade logoutu
    this.showAddSectionButtonElement = null; //AddSectionButton
    if (isHomeOrLangHome && this.isFacebook()) { //spatna lm.com stranka (home jazyka nebo home) => redirect to FB application
      window.location.href = this.homes[actStatus.courseId];
      return;
    }
    if (!this.isInFacebookIFrame() && !this.isFacebook()) return;
    FB_RequireFeatures(["XFBML"], function() { //inicializace FB
      FB.Facebook.init(
        FBLib.appKeys[actStatus.courseId], FBLib.xd_receiverUrls[actStatus.courseId]);
      if ($('body').hasClass('fb-iframe')) //IFrame FB application:
        FB.CanvasClient.startTimerToSizeToContent();
    });
  };
  
  _FBLib.defaultFeeds = 'default';
  
  _FBLib.prototype = {
    
    logout: function () {
      FB.Connect.logout( function () {
        __doPostBack(FBLib.logoutLink_UniqueID, '');
      });
    },
    
    publish_feed_story : function (storyType) {
      FB.ensureInit(function() {
        FB.Connect.showFeedDialog(FBLib.feeds[storyType][actStatus.courseId], FBLib.feedsPar[storyType]);
      })
    },
    
    showAddSectionButton : function (btnName) {
      this.showAddSectionButtonElement= document.getElementById(btnName);
      if (this.showAddSectionButtonElement==null) return;
      FB.ensureInit(function() {
        FB.Connect.showAddSectionButton('profile', FBLib.showAddSectionButtonElement);
      });  
    },
    showPermissionDialog : function () {
      FB.ensureInit(function() {
        FB.Connect.showPermissionDialog('publish_stream');
      });  
    },
    showEMailPermissionDialog : function () {
      FB.ensureInit(function() {
        FB.Connect.showPermissionDialog('email');
      });  
    },
    showOfflinePermissionDialog : function () {
      FB.ensureInit(function() {
        FB.Connect.showPermissionDialog('offline_access');
      });  
    }
  };

  var FBLib = hasFacebook ? new _FBLib () : null;




  
  AddIn = function () {
  };
  
  AddIn.mouseOver = function () {
    if (!hasAddThis) return false;
    return addthis_open(this, '', '[URL]', '[TITLE]')
  };

  AddIn.mouseOut = function () {
    if (!hasAddThis) return; 
    addthis_close();
  };

  AddIn.click = function () {
    if (!hasAddThis) return false;
    return addthis_sendto();
  };