if (document.images){
	var image1 = new Image();
	var image2 = new Image();
	var image3 = new Image();
	var image4 = new Image();
	var image5 = new Image();
	
	image1.src="images/navbar/home_over.png";
	image2.src="images/navbar/staff_over.png";
	image3.src="images/navbar/parents_over.png";
	image4.src="images/navbar/events_over.png";
	image5.src="images/navbar/contact_over.png";
}