loadImage1 = new Image();
loadImage1.src = "nav/home_2.jpg";
staticImage1 = new Image();
staticImage1.src = "nav/home.jpg";

loadImage2 = new Image();
loadImage2.src = "nav/who_2.jpg";
staticImage2 = new Image();
staticImage2.src = "nav/who.jpg";

loadImage3 = new Image();
loadImage3.src = "nav/help_2.jpg";
staticImage3 = new Image();
staticImage3.src = "nav/help.jpg";

loadImage4 = new Image();
loadImage4.src = "nav/you_2.jpg";
staticImage4 = new Image();
staticImage4.src = "nav/you.jpg";