function preloader() 

{

rolloverImage1 = new Image(); 

rolloverImage1.src = "pics/2d_pic.gif";

rolloverImage2 = new Image(); 

rolloverImage2.src = "pics/3d_pic.gif";

rolloverImage3 = new Image(); 

rolloverImage3.src = "pics/4d_pic.gif";

rolloverImage4 = new Image(); 

rolloverImage4.src = "pics/id_pic.gif";

rolloverImage5 = new Image(); 

rolloverImage5.src = "pics/pied_pic.gif";




}