if (document.images) 
{
   img1 = new Image();
   img2 = new Image();
   img3 = new Image();
   img4 = new Image();
   img5 = new Image();
   img6 = new Image();
   img7 = new Image();
   //img3 = new Image()
   img1.src = "images/menu-home-color.gif";
   img2.src = "images/menu-mountain-based-color.gif";
   img3.src = "images/menu-incentives-color.gif";
   img4.src = "images/menu-school-color.gif";
   img5.src = "images/menu-culture-color.gif";
   img6.src = "images/menu-booking-color.gif";
   img7.src = "images/menu-aboutus-color.gif";
  
}