var current_press_items = 0;
var total_press_items = 0;
total_press_items = $('.press_logo').length;
$('#press_list').css('overflow','hidden');
$('#press_prev').click(prevPage);
$('#press_next').click(nextPage);
pressPagination();

function pressPagination() {
   start_item = current_press_items;
//   alert(start_item);
   if (start_item <= 0) {
      $('#press_prev').hide();
      current_press_items = 0;
   }
   else {
      $('#press_prev').show();
   }

   if (start_item + 3 >= total_press_items) {
      $('#press_next').hide();
      current_press_items = parseInt(total_press_items/3)*3;
   }
   else {
      $('#press_next').show();
   }
   $('.press_logo').hide();
   for(i = 0; i < 3; i++) {
      $('.press_logo').eq(i+start_item).show();
   }
}

function nextPage() {
   current_press_items += 3;
   pressPagination();
   return false;
}

function prevPage() {
   current_press_items -= 3;
   pressPagination();
   return false;
}