var re_alias 		= new RegExp ('^[-a-z0-9_.]+$' , 'i');
var re_password 	= new RegExp ('^[-a-z0-9_.]+$' , 'i');
var re_email	 	= new RegExp ('^[a-z0-9]([-a-z0-9_]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9_]*[a-z0-9])?)*@[a-z0-9]+([\.-]?[a-z0-9]+)*\.([a-z][a-z]+)$' , 'i');