function check() {

	if (document.getElementById("name").value == '' || document.getElementById("vorname").value == '' || document.getElementById("email").value == '' || document.getElementById("vorwahl").value == '' || document.getElementById("telefon").value == '' || document.getElementById("datenschutzerklaerung").checked != true) {
		error = 1;
	}else{
		error = 0;
	}

	if (error == 0) {
	   document.getElementById("formular").action = '?error=0';
	   document.getElementById("formular").submit();
	}else{
		document.getElementById("formular").action = '?error=1';
		document.getElementById("formular").submit();
	}
}

function show() {
    document.getElementById("risikohinweis").style.display = 'block';
}

function show2() {
    document.getElementById("erfolg").style.display = 'block';
}

function show3() {
	document.getElementById("fehler").style.display = 'block';
}

function hide() {
	document.getElementById("risikohinweis").style.display = 'none';
}

function hide2() {
	document.getElementById("fehler").style.display = 'none';
}

function hide3() {
	document.getElementById("erfolg").style.display = 'none';
}