var gallery = new Array();

if (photo1 != "")
   gallery.push(photo1);
if (photo2 != "")
   gallery.push(photo2);
if (photo3 != "")
   gallery.push(photo3);

var gallery_i = 0;

function ChangeGalleryPic()
{
   if (document.getElementById("blendimage"))
   {
      //document.getElementById("right_product").src = products[i];
      blendimage("blenddiv","blendimage", gallery[gallery_i], 200);
      gallery_i ++;
      if (gallery_i >= gallery.length)
         gallery_i = 0;
      setTimeout(ChangeGalleryPic, 6000);
   }
}