event_on = "";
picture_on = "";

function ukaz(id, sel) {
	el = document.all("div"+id);

	if ((event_on != "div"+id) && (event_on != "")) {
		document.all(event_on).style.display = "none";
	}

	if (el.style.display == "none") {
		el.style.display = "inline";
	} else {
		el.style.display = "none";
	}
	
	event_on = "div"+id;
}

function mail (hostname, username) { 
	window.location = 'mail' + 'to:' + username + '@' + hostname + '.sk';
}

function check_nl() {
	if (document.nl_form.n_email.value == "") {
		alert("Neuviedli ste váš e-mail.");
	} else {
		if (document.nl_form.n_email.value == "váš e-mail") {
			alert("Neuviedli ste váš e-mail.");
		} else {
			document.nl_form.submit();
		}
	}
}