/**
 * @author LatecomerX
 * @copyright 2008
 */

function isEmpty(v) {
	if (typeof(v) == 'undefined' || v == null || v == '' || v == 0) { return true; }
	else { return false; }
}

function isEmail(email) { return /^[a-z0-9_\-\.]+@([a-z0-9\-]+\.)+[a-z]{2,4}$/i.test(email); }