function preload()
{
	if (document.images) 
	{
	   img1 = new Image();
	   img2 = new Image();
	   img3 = new Image();
	   img4 = new Image();
	   img5 = new Image();
	   img1.src = "/assets/img/nav/_about.gif";
	   img2.src = "/assets/img/nav/_services.gif";
	   img3.src = "/assets/img/nav/_projects.gif";
	   img4.src = "/assets/img/nav/_beforeYouStart.gif";
	   img5.src = "/assets/img/nav/_contact.gif";
	}
}