function showIndexAD(num){
  switch (num){
  	case 1:
        window.location = 'http://www.sapphiretech.com/presentation/product/?psn=000101&pid=295';
      break;
    case 2:
        window.location = 'http://www.sapphiretech.com/presentation/product/?psn=000101&pid=290';
      break;
    case 3:
      window.location = 'http://www.sapphiretech.com/presentation/HD5800/HD5800_index.aspx?cid=1';
      break;
    case 4:
      window.location = 'http://www.sapphiretech.com/presentation/member/member_index.aspx';
      break;
    case 5:
      window.location = 'http://www.sapphiretech.com/presentation/product/?psn=000101&pid=293';
      break;
    default:
      break;
  }
}