if (document.images)
    {
      preload_image_object = new Image();
      // set image url
      image_url = new Array();
      image_url[0] = "images/menu.gif";
//      image_url[1] = "photos/start.jpeg";
//      image_url[2] = "http://mydomain.com/image2.gif";
 //     image_url[3] = "http://mydomain.com/image3.gif";

       var i = 0;
       for(i=0; i<=1; i++) 
         preload_image_object.src = image_url[i];
		 
    }



function showImage(newUrl)
{
document.getElementById("bigImage").src=newUrl;
}
function menuShowBg(idcell)
{
	document.getElementById(idcell).style.backgroundImage="url('images/menu.gif')";
}
function menuHideBg(idcell)
{
	document.getElementById(idcell).style.backgroundImage="none";
}