if (document.images) 
{
   img1 = new Image();
   img2 = new Image();
   img3 = new Image();
   img5 = new Image();
   img6 = new Image();
   img7 = new Image();
   img8 = new Image();
   img9 = new Image();
   img10 = new Image();
   img11 = new Image();
   img13 = new Image();
   img14 = new Image();
   img15 = new Image();
   img16 = new Image();
   img17 = new Image();
   img18 = new Image();
   img1.src = "images/header_new1.jpg";
   img2.src = "images/header_new2.jpg";
   img3.src = "images/header_new3.jpg";
   img5.src = "images/header_new5.jpg";
   img6.src = "images/header_new6.jpg";
   img7.src = "images/header_new7.jpg";
   img8.src = "images/header_new8.jpg";
   img9.src = "images/header_new9.jpg";
   img10.src = "images/header_new10.jpg";
   img11.src = "images/header_new11.jpg";
   img13.src = "images/header_new13.jpg";
   img14.src = "images/header_new14.jpg";
   img15.src = "images/header_new15.jpg";
   img16.src = "images/header_new16.jpg";
   img17.src = "images/header_new17.jpg";
   img18.src = "images/header_new18.jpg";
}