var win_open = false;
var imgs = Array();
var imgs_size = 0;
var cur_img = 0;

//===================================================================================================================

function Show_Win(n){
         var cart;

		 if (win_open) {
             }
             else {
                   img = document.getElementById('cart_img');
                   img.src = imgs[n];
                   img.style.visibility = 'visible';
                   img.style.display = 'block';

                   cart = document.getElementById('cart');
                   cart.style.visibility = 'visible';
                   cart.style.display = 'block';
                   win_open = true;

                   cur_img = n;

                   if (imgs_size == cur_img){
                       div = document.getElementById('nextimg');
                       div.style.visibility = 'hidden';
                       div.style.display = 'none';
                       }
                   if (cur_img == 1){
                       div = document.getElementById('previmg');
                       div.style.visibility = 'hidden';
                       div.style.display = 'none';
                       }
                   }

         }

//===================================================================================================================
function NextImg(){

         if (cur_img < imgs_size){
             img = document.getElementById('cart_img');
             cur_img = cur_img+1;
             img.src = imgs[cur_img];
             }

         div = document.getElementById('nextimg');
         if (cur_img < imgs_size) {
             div.style.visibility = 'visible';
             div.style.display = 'block';
             } else {
                     div.style.visibility = 'hidden';
                     div.style.display = 'none';
                     }

         div = document.getElementById('previmg');
         if (cur_img > 1) {
             div.style.visibility = 'visible';
             div.style.display = 'block';
             } else {
                     div.style.visibility = 'hidden';
                     div.style.display = 'none';
                     }


         }
//===================================================================================================================
function PrevImg(){
         if (cur_img > 1){
             img = document.getElementById('cart_img');
             cur_img = cur_img-1;
             img.src = imgs[cur_img];
             }

         div = document.getElementById('nextimg');
         if (cur_img < imgs_size) {
             div.style.visibility = 'visible';
             div.style.display = 'block';
             } else {
                     div.style.visibility = 'hidden';
                     div.style.display = 'none';
                     }

         div = document.getElementById('previmg');
         if (cur_img > 1) {
             div.style.visibility = 'visible';
             div.style.display = 'block';
             } else {
                     div.style.visibility = 'hidden';
                     div.style.display = 'none';
                     }             
         }
//===================================================================================================================

function Hide_Win(){
         var cart;
         
         cart = document.getElementById('cart');
         cart.style.visibility = 'hidden';
         cart.style.display = 'none';
         img = document.getElementById('cart_img');
         img.style.visibility = 'hidden';
         img.style.display = 'none';
         win_open = false;

         div = document.getElementById('nextimg');
         div.style.visibility = 'visible';
         div.style.display = 'block';

         div = document.getElementById('previmg');
         div.style.visibility = 'visible';
         div.style.display = 'block';

         }


//===================================================================================================================