function extractionMethodHandler(target, prefix)
{
	jQuery(function ($) {
		$em = $(target);
		displayStyle = ($em.val() === 'direct') ? 'none' : 'table-row';

		document.getElementById(prefix + '_hostname').style.display = displayStyle;
		document.getElementById(prefix + '_port').style.display = displayStyle;
		document.getElementById(prefix + '_username').style.display = displayStyle;
		document.getElementById(prefix + '_password').style.display = displayStyle;
		document.getElementById(prefix + '_directory').style.display = displayStyle;
	});
}