function home_pre(){
	image1 = new Image(940,531);
	image1.src = "images/home.jpg";

	image2 = new Image(940,531);
	image2.src = "images/home_about.jpg";

	image3 = new Image(940,531);
	image3.src = "images/home_portfolio.jpg";

	image4 = new Image(940,531);
	image4.src = "images/home_contact.jpg";
}