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

function display_business()
{
  var content = '      <form name="business">';
      content += '<p align="left"> ';
      content += '<select name="choice" size="1" onChange="redir( choice );" id="choice">';
      content += '   <option value="business" selected>请选择项目</option>';
	  content += '   <option value="others2010.shtml">2010 年</option>';   
      content += '   <option value="others2009.shtml">2009 年</option>';   
      content += '</select></form></p>';
      document.write(content);
      document.close();
}