function testnsend(form) {
	var TestText = form.text.value;
	var TestJmeno = form.jmeno.value;
    var TestEmail = form.email.value;
	var filter = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
	if (TestText == "") {
			document.getElementById("warn").style.display="inline";
			return false;
	} else {
			document.getElementById("warn").style.display="none";
	}
	if (TestJmeno == "") {
			document.getElementById("warn").style.display="inline";
			return false;
	} else {
			document.getElementById("warn").style.display="none";
	}
	if (!filter.test(TestEmail)) {
			document.getElementById("bad_mail").style.display="inline";
			return false;
	} else {
			document.getElementById("bad_mail").style.display="none";
	}
	document.sendform.submit();
	return true;
}