if (document.images)
{
  pic1= new Image(15,13);
  pic1.src="images/menu.jpg";
  pic2= new Image(15,13);
  pic2.src="images/menu2.jpg";
  pic3= new Image(800,800);
  pic3.src="images/slideout.jpg";
  pic4= new Image(200,209);
  pic4.src="images/apartments2.jpg";
  pic5= new Image(244,255);
  pic5.src="images/villas2.jpg";
}