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();
   img10 = new Image();
   img11 = new Image();
   
   img1.src = "portfolio/312/images/living_room.jpg";
   img2.src = "portfolio/312/images/bedroom.jpg"
   img3.src = "portfolio/312/images/dining_room.jpg"
   img4.src = "portfolio/312/images/office.jpg"
   
   img5.src = "portfolio/en/images/den.jpg"
   img6.src = "portfolio/en/images/dining_room.jpg"
   img7.src = "portfolio/en/images/entrance_hall.jpg"
   img8.src = "portfolio/en/images/kitchen.jpg"
   img9.src = "portfolio/en/images/living_room.jpg"
   
   img10.src = "images/portfolio1_on.png"
   img11.src = "images/portfolio2_on.png"
}