(function($) {
  $.fn.toggleFade = function(settings)
  {
  	settings = jQuery.extend(
  		{
        speedIn: "normal",
        speedOut: settings.speedIn
  		}, settings
  	);
  	return this.each(function()
  	{
  	  var isHidden = jQuery(this).is(":hidden");
      jQuery(this)[ isHidden ? "fadeIn" : "fadeOut" ]( isHidden ? settings.speedIn : settings.speedOut);
    });
  };
})(jQuery);

$(document).ready(function(){
		
	$("#linkButton,div.close").click(function () {
	  $("#infoBox").toggleFade({ speedIn : 150, speedOut : 500 });
	});

});