function kbmjLpo(code, target_id, x_pos, y_pos, charset, option) {
  option = option || "" ;

  var host = "recommend.kbmj.com";
  
  if(!navigator.userAgent.match(/Mozilla\/4\.0 \(compatible; MSIE 5\.\d*; (Windows|MSN|AOL)/))
  {
    charset = "UTF-8";
  }
  if(!target_id){
    target_id = "kbmj_lpo";
  }
  
  var refinfo = encodeURIComponent(document.referrer);  
    
  var url = "http://" + host + "/lpo/show/?code=" + code + "&target_id=" + target_id + "&charset=" + charset + (option ? "&" + option : "") + "&ref=" + refinfo + "&domain=demo";
  
  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;
  }
}