window.addEvent('domready', function () {
	em = document.id('extraction_method');
	if (em) {
		em.addEvent('change', function () {
			if(em.value == 'direct') {
				document.id('row_ftp_hostname').style.display = 'none';
				document.id('row_ftp_port').style.display = 'none';
				document.id('row_ftp_username').style.display = 'none';
				document.id('row_ftp_password').style.display = 'none';
				document.id('row_ftp_directory').style.display = 'none';
			} else {
				document.id('row_ftp_hostname').style.display = 'table-row';
				document.id('row_ftp_port').style.display = 'table-row';
				document.id('row_ftp_username').style.display = 'table-row';
				document.id('row_ftp_password').style.display = 'table-row';
				document.id('row_ftp_directory').style.display = 'table-row';
			}
		});
	}

});