var img = new Array(); 
img[0] = new Image(); img[0].src = "img/home_f2.jpg";
img[1] = new Image(); img[1].src = "img/home.jpg"; 
img[2] = new Image(); img[2].src = "img/system_f2.jpg";
img[3] = new Image(); img[3].src = "img/system.jpg"; 
img[4] = new Image(); img[4].src = "img/access_f2.jpg";
img[5] = new Image(); img[5].src = "img/access.jpg";
img[6] = new Image(); img[6].src = "img/recruit_f2.jpg";
img[7] = new Image(); img[7].src = "img/recruit.jpg";
img[8] = new Image(); img[8].src = "img/contact_f2.jpg";
img[9] = new Image(); img[9].src = "img/contact.jpg";