function sha1form(formular){
	$("#password_hmac").val(hex_hmac_sha1(hex_sha1($("#heslo").val()), $("#challenge").val()));
	document.getElementById("heslo").disabled = true;
	document.getElementById("challenge").disabled = true;
	formular.submit();
	return false;
}
function show_gallery(galeria){
	$(".galeria").hide("fast");
	$(galeria).parent().next().show("fast");
}