var filter_email = /^[_a-zA-Z0-9\.\-]+@[a-zA-Z0-9\.\-]+\.[a-zA-Z]{2,5}$/;

var filter_zip = /^[0-9]{3}[ ]{0,1}[0-9]{2}$/;

// ceske
var filter_ic = /^[0-9]{8}$/;

// dic ceske
var filter_dic = /^CZ[0-9]{8,10}$/;

var filter_phone = /^ ?\+?[0-9]{0,3} ?[0-9]{3} ?[0-9]{3} ?[0-9]{3} ?$/;

var numInt   = /^[0-9 ]+$/;