function Dodaj(id_oferty, id_uzytkownika) {
	if (parseInt(id_uzytkownika)>0) {
		new Ajax.Request('/lista/dodaj', {
	 		method:'post',
	 		parameters: 'id_oferty='+id_oferty,
	 		requestHeaders: {Accept: 'application/json'},
	 		onSuccess: pokazWynik });		
	}
	else {
		document.location = '/lista';	
	}
}

function pokazWynik(transport) {
	hideMessages();
	var data = transport.responseText.evalJSON(true);
	if (data.information) {
		showMessage("messageInfo", data.information)
	}
	if (data.error) {
		showMessage("messageWarning", data.error)
	}
}