gGalleryImage = 1;

//-----------------------------------------------------------
// 
// set_gallery_image
//
//-----------------------------------------------------------
function set_gallery_image(num)
{  
   document.getElementById("largeImage" + gGalleryImage).style.display = "none";
   document.getElementById("largeImage" + num).style.display = "block";

   gGalleryImage = num;
   return(false);
}

//-----------------------------------------------------------
// 
// next_gallery_image
//
//-----------------------------------------------------------
function next_gallery_image(max)
{
   num = (gGalleryImage == max) ? 1 : gGalleryImage + 1;

   set_gallery_image(num);
   return(false);
}

//-----------------------------------------------------------
// 
// prev_gallery_image
//
//-----------------------------------------------------------
function prev_gallery_image(max)
{
   num = (gGalleryImage == 1) ? max : gGalleryImage - 1;

   set_gallery_image(num);
   return(false);
}