function sf() {
	if (document.getElementById("fra"))
		document.f.fra.focus();
}

var beskedwarning = false;
var frawarning = false;
function checkform() {
	if (document.f.fra.value.length != 0) {
		document.getElementById("fra").style.backgroundColor = "transparent";
	}
	if (document.f.b.value.length != 0) {
		document.getElementById("b").style.backgroundColor = "transparent";
	}

	if (document.f.fra.value.length == 0) {
		if (!frawarning)
			document.getElementById("email").innerHTML += " (skal udfyldes)"

		document.getElementById("fra").style.backgroundColor = "yellow";
		document.f.fra.focus();
		frawarning = true;
		return false;
	}

	if (document.f.b.value.length == 0) {
		if (!beskedwarning)
			document.getElementById("besked").innerHTML += " (skal udfyldes)"

		document.getElementById("b").style.backgroundColor = "yellow";
		document.f.b.focus();
		beskedwarning = true;
		return false;
	}

	document.f.submit();
}