function upload_file() {

	$config['upload_path'] = './manual';
	$config['allowed_types'] = 'gif|jpg|jpeg|png|iso|dmg|zip|rar|doc|docx|xls|xlsx|ppt|pptx|csv|ods|odt|odp|pdf|rtf|sxc|sxi|txt|exe|avi|mpeg|mp3|mp4|3gp';
	$config['max_size']	= '1024';
	$config['max_width']  = '1024';
	$config['max_height']  = '768';

	$this->load->library('upload', $config);
	
	if ( ! $this->upload->do_upload("upload_file"))
	{
		$error = array('error' => $this->upload->display_errors());
		$msg = $error;
		echo("<script>alert('$msg');history.back();</script>");
		echo("<script>JavaScript:window.close();</script>");
	}
	else
	{
		$upload_data = $this->upload->data();

		$this->load->model('Administrator');
		$this->Administrator->save_uploadInfo($upload_data);
		
		$msg = "업로드 완료하였습니다.";
		echo("<script>alert('$msg');history.back();</script>");
		echo("<script>JavaScript:window.close();window.opener.top.location.reload()</script>");
		
	}
}