/*
* jQuery interstitial plugin v1.1
* jquery.interstitial.js
*
* https://github.com/brettdewoody/jQuery-Interstitial
*
* Copyright (c) 2011 Brett DeWoody
*
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*
* Special thanks to Soh Tanaka (http://www.sohtanaka.com) for inspiring
* this jQuery-based interstitial popup. You can read about his original
* method here on Soh Tanaka's webite:
*
* http://www.sohtanaka.com/web-design/inline-modal-window-w-css-and-jquery
*/

(function( $ ){

  var methods = {
     open : function( options ) {
     
       var defaults = {
         'url' : '',
         'width' : 600,
         'height' : 400,
         'opacity' : 70,
         'id' : 'popupBlock',
         'onInterstitialClose' : function(){}
     };
    
        var settings = $.extend({}, defaults, options);

//Fade in Background
$('body').append('<div id="fade"></div>');
$('#fade').css({'filter' : 'alpha(opacity=' + settings.opacity + ')'}).fadeIn();

//Fade in the Popup
$('body').append('<div id="' + settings.id + '"></div>');
$('#' + settings.id).load(settings.url, function() {
$('#' + settings.id).css({'width' : Number(settings.width), 'height' : Number(settings.height)}).fadeIn();
});

//Define margin for center alignment (vertical + horizontal)
var popMargTop = settings.height / 2;
var popMargLeft = settings.width / 2;

//Apply Margin to Popup
$('#' + settings.id).css({
'margin-top' : -popMargTop,
'margin-left' : -popMargLeft
});

//On click of the fade, close the popup and fade
$('#fade').live('click', function() {
$().interstitial('close', settings);
});

     },
     
     // Function: Close the interstitial
     close : function( options ) {
     
       var defaults = {
         'id' : 'popupBlock',
         'onInterstitialClose' : function(){}
     };
     
       var settings = $.extend({}, defaults, options);
     
$('#fade , #' + settings.id).fadeOut(function() {
$('#fade').remove();
});

// onInterstitialClose callback
     settings.onInterstitialClose.call(this);

  }
  };

  $.fn.interstitial = function( method ) {
    
    if ( methods[method] ) {
      return methods[method].apply( this, Array.prototype.slice.call( arguments, 1 ));
    } else if ( typeof method === 'object' || ! method ) {
      return methods.init.apply( this, arguments );
    } else {
      $.error( 'Method ' + method + ' does not exist on jQuery.interstitial' );
    }
  
  };

})( jQuery );