// run asap
if (document.images) {
  pic1= new Image(); 
  pic1.src="/img/content.png"; 

  pic2= new Image(); 
  pic2.src="/img/ngtop.png"; 

  pic3= new Image(); 
  pic3.src="/img/ngmid.png"; 

  pic4= new Image(); 
  pic4.src="/img/ngbot.png"; 
}

// after dom loads
$(document).ready(function() {
	$("#ngsites").hide();
	$("#ngbutton").click(
    function () {
    	$("#ngsites").toggle();
    }
  );
});