if (navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.indexOf("Windows", 0) != -1 && navigator.appVersion.substring(0,1) >= 4)
{
document.writeln("<META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html;CHARSET=x-user-defined\">");
}
else
{
document.writeln("<META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html;CHARSET=iso-8859-1\">");
}

function checkTyhjat(lomake) {
	for (var i = 1; i < 4; i++) {
		if (lomake.elements[i].value == '') {
			alert("Täytä kaikki kentät!");
			return false;
		}
	}
	return true;
}