function changeimage(img_name, img_src) {
      document[img_name].src = img_src;
   }

   function singleSlide(src) {

         if (document.all){
        
              document.images.SlideShow.style.filter="blendTrans(duration=2)"
              document.images.SlideShow.filters.blendTrans.Apply  ()
           }
           document.images.SlideShow.src = src;
           if (document.all){
              document.images.SlideShow.filters.blendTrans.Play(  )
        }
     
   
   }


   //visibility layers
   if (document.layers) {
       visible = 'show';
       hidden  = 'hide';
   } else {
       visible = 'visible';
       hidden = 'hidden';
   }
  
  
   function runSlideShow(){
      if (document.all){
         document.images.SlideShow.style.filter="blendTrans(duration=2)"
         document.images.SlideShow.filters.blendTrans.Apply  ()
      }
      document.images.SlideShow.src = preLoad[j].src;
      if (document.all){
         document.images.SlideShow.filters.blendTrans.Play(  )
      }
      j = j + 1
      if (j > (p-1)) j=0
      t = setTimeout('runSlideShow()', slideShowSpeed);
   }
   
   
function makelayerfullsize(layer) {
    if (document.layers){
        document.layers[layer].height = "100%";
        document.layers[layer].width = "100%";
    } else if (document.all) {
        document.all[layer].style.height = "100%";
        document.all[layer].style.width = "100%";
    } else if (document.getElementById){
        document.getElementById(layer).style.height = "100%";
        document.getElementById(layer).style.width = "100%";
    }
}


function resize() {
	makelayerfullsize('layerbackgroundphoto');
	makelayerfullsize('layerphoto');
}

function makevisible(name,action) {
    if (document.layers) {
      if (action) {
        document.layers[name].visibility = visible;
      } else {
        document.layers[name].visibility = hidden;
      }
    } else {
      if (action) {
        document.all(name).style.visibility = visible;
      } else {
        document.all(name).style.visibility = hidden;
      }
    }
  }


function showBigImage(src) {
	resize();
	changeimage('bigphoto', 'image/big/'+src);
	makevisible('layerbackgroundphoto',true);
	makevisible('layerphoto',true);
}

function closeBigImage() {
	makevisible('layerbackgroundphoto',false);
	makevisible('layerphoto',false);
}