if (document.images) 
{
   img1 = new Image();
   img2 = new Image();
   img3 = new Image();
   img4 = new Image();
   img5 = new Image();
   img6 = new Image();
   img7 = new Image();
   img8 = new Image();
   img9 = new Image();

   img1.src = "/images/home_over.png";
   img2.src = "/images/events_over.png";
   img3.src = "/images/calendar_over.png";
   img4.src = "/images/about_over.png";
   img5.src = "/images/drinks_over.png";
   img6.src = "/images/private_over.png";
   img7.src = "/images/join_over.png";
   img8.src = "/images/location_over.png";
   img9.src = "/images/contact_over.png";
}