function redir(obj)
{
  var i = obj.selectedIndex;
  if (obj.options[i].value != 'empty')
  {
  	document.location = obj.options[i].value;
  }
}

function display_announcement()
{
  var content = '      <form name="announcement">';
      content += '<p align="left"> ';
      content += '<select name="choice" class="selectbox" onChange="redir( choice );" id="choice">';
      content += '   <option value="business" selected>select other announcement</option>';
      content += '   <option value="announcement_2008.shtml">Announcement of 2008</option>'; 
      content += '   <option value="announcement_2007.shtml">Announcement of 2007</option>'; 
      content += '   <option value="announcement_2006.shtml">Announcement of 2006</option>'; 
      content += '   <option value="announcement_2005.shtml">Announcement of 2005</option>';      
      content += '   <option value="announcement_2004.shtml">Announcement of 2004</option>'; 
      content += '   <option value="announcement_2003.shtml">Announcement of 2003</option>'; 
      content += '   <option value="announcement_2002.shtml">Announcement of 2002</option>';
      content += '   <option value="announcement_2001.shtml">Announcement of 2001</option>';
      content += '</select></form></p>';
      document.write(content);
      document.close();
}