function iframeResizer(id){
  var obj = document.getElementById(id);
  var the_height= obj.contentWindow.document.body.scrollHeight;
  document.getElementById(id).height=the_height;
  
}
jQuery.fn.fadeToggle = function(speed, easing, callback) {
    return this.animate({opacity: 'toggle'}, speed, easing, callback);
};