var baner_visible_count = 6;
var baner_count = 6;
var first_visible_baner = 1;

function zakaz(id){$.post('/zakaz/_put_to_basket/'+id+'/', { }, function(data){$('#korzina_zakaz').html(data);}, 'html');}

$(document).ready(function()
{   
  
  baner_count = $("div.baner").map(function(){
      return $(this).val();
  }).length;
  
  first_visible_baner = Math.round((baner_count - baner_visible_count)/2)+1;
  
  reStatebaners();
  
  /* ----- */

  $("#strelka_l").click(function () {      
      if (first_visible_baner > 1) {
        first_visible_baner--;
        reStatebaners();
        stateButtons();
      }    
  });
  
  $("#strelka_r").click(function () {      
      if (first_visible_baner <= baner_count - baner_visible_count) {
        first_visible_baner++;
        reStatebaners();
        stateButtons();
      }
  });


 $("#strelka_l").hover(
    function () {
      $(this).css("cursor","pointer");
    },
    function () {
      $(this).css("cursor","default");
    }
  );

 $("#strelka_r").hover(
    function () {
      $(this).css("cursor","pointer");
    },
    function () {
      $(this).css("cursor","default");
    }
  ); 
  
  /* -- верхняя форма регистрации сайта */
  
  $("#tf_login").click(function(){
      $("div.top_form").removeClass("min");
      $("#tf_open").hide();
      $("#tf_form").show();
  }); 
  	  		
});

function reStatebaners(){
  for (var i = 1; i<=baner_count; i++){
    reStatebaner(i);
  }
}

function reStatebaner(val){
  if ((val >= first_visible_baner) && (val < first_visible_baner + baner_visible_count)){
    $("#bnr_"+val).show();
  }else{
    $("#bnr_"+val).hide();
  }
}

function stateButtons(){
  if (first_visible_baner > 1) {
    $("#strelka_l").show();
  } else {
    $("#strelka_l").hide();
  } 
  if (first_visible_baner <= baner_count - baner_visible_count) {
    $("#strelka_r").show();
  } else {
    $("#strelka_r").hide();
  } 
}