var dbsense_banner_list = ['B123560T','B123576S'];
var dbsense_current_idx = 0;
function dbsense_show_banner() {
  if ( dbsense_banner_list.length > 0 ) {
    var idx = Math.floor(Math.random()*dbsense_banner_list.length);
    if ( idx >= dbsense_banner_list.length ) {
      idx = 0;
    }
    var c = dbsense_banner_list[idx];
    var d = document.getElementById('dbsense_random_banner');
    d.setAttribute('id', Math.random());
    d.setAttribute('style', 'display: block; margin: 20px 0; padding: 0; text-align: center;');
    var a = document.createElement('a');
    a.setAttribute('href', "https://dbsense.kr/l/go_landing.php?id=OTcxMTkzMTEyMDg1NjExNQ==&cd="+c);
    a.setAttribute('target', '_blank');
    var i = document.createElement('img');
    i.setAttribute('src', 'https://dbsense.kr/file/banner/'+c+'.png');
    a.appendChild(i);
    if ( d.firstChild != null ) {
      d.removeChild(d.firstChild);
    }
    d.appendChild(a);
  }
}