var host = "recommend.kbmj.com";
var item_ids = new Array();

function kbmjBcon(type, query, param) {
  if(param){
    var item_code = getParam(param);
    if(item_code){
      if(query) query = query + "&";
      query = query + "id[]=" + item_code;
    }
  }
  var url = location.protocol + "//" + host + "/bcon/" + type + "/?" + query;
  document.write("<img src='" + url + "' width='1' height='1'>");
}


function kbmjRecommend(type, query, charset, target_id, param) {
  if(!navigator.userAgent.match(/Mozilla\/4\.0 \(compatible; MSIE 5\.\d*; (Windows|MSN|AOL)/)){
    charset = "UTF-8";
  }
  if(!target_id){
    target_id = type;
  }
  var q = query == "" ? "" : query + "&";

  if(param){
    var item_code = getParam(param);
    if(item_code) q = q + "id[]=" + item_code + "&";
  }

  var url = location.protocol + "//" + host + "/recommend/" + type + "/?" + q + "target_id=" + target_id + "&charset=" + charset;

  var func = function(){
    var script = document.createElement('script');
    script.setAttribute('type', 'text/javascript');
    script.setAttribute('charset', charset);
    script.setAttribute('src', url);
    var target = document.getElementById(target_id);
    target.appendChild(script);
  }

  if(window.addEventListener){
    window.addEventListener('load', func, false);
  }else if(window.attachEvent){
    window.attachEvent('onload', func);
  }else{
    window.onload = func;
  }
}


function setCtr(item_code, type, link, k){
  var item_url = link.href;
  var img = new Image(0,0);
  var r_num = Math.floor(Math.random() * 10000); // キャッシュ対策用ランダム数字
  img.src = location.protocol + "//" + host + "/recommend/set_ctr/?item_code=" + item_code  +"&t=" + type + "&k=" + k + "&r=" + r_num;
  img.onload = function(){
    location.href = item_url;
  }
  img.onerror = function(){
    location.href = item_url;
  }
}


function getParam(param) {
  var params = location.search;
  if(!params) return false;
  params     = params.substring(1);

  var pairs  = params.split("&");
  var key    = new Array();

  for (i = 0; i < pairs.length; i++) {
    pair          = pairs[i].split("=");
    key[pair[0]]  = pair[1];
  }
  return key[param];
}