if(window.name != "promotional")
{
  window.name = "mainwindow";
}

function promotional()
{
  window.open("/promo/promotion1.html", "promotional", "width=300, height=300, top=150, left=450, scrollbars=1");
}

function showPromotion()
{
  window.open("/web_hosting/business.html#promotional", window.opener.name);
  window.close();
}