function addOfficeMail(nr) {
	var adressen = [];
	adressen[0] = ['off', 'zoe', 'ice', 'rrer-lo', 'tz', '.at'];
	adressen[1] = ['micha', 'zoer', 'el.zoerrer', 'rer-', 'lotz', '.at'];
	adressen[2] = ['herber', 'zoerrer', 't.lotz', '-lo', 'tz', '.at'];

	var name = adressen[nr][0]+adressen[nr][2];
	var domain = adressen[nr][1]+adressen[nr][3]+adressen[nr][4]+adressen[nr][5];
	
	document.write('<a class="sub" href=\"mailto:' + name + '@' + domain + '\">');
	document.write(name + '@' + domain + '</a>');
}

function validate(myForm) {
	var isOK = true;
	if (myForm.elements["firstname"].value == '') { isOK = false; }
	if (myForm.elements["surname"].value == '') { isOK = false; }
	if (myForm.elements["phonenumber"].value == '') { isOK = false; }
	if (myForm.elements["email"].value == '') { isOK = false; }

/*	var count = 0;
	for (var j=0; j<myForm.elements["thema[]"].length; j++) {
		if (myForm.elements["thema[]"][j].checked) {
			count++;
		}
	}
	if (count == 0) { isOK = false; }
*/
	return isOK;

}

function toggleVisibility(id) {
	var e = document.getElementById(id);
	if(e.style.display == 'block') {
		e.style.display = 'none';
	} else {
		e.style.display = 'block';
	}
}

function enableButton(id) {
	var e = document.getElementById(id);
	e.disabled = false;
}

function disableButton(id) {
	var e = document.getElementById(id);
	e.disabled = true;
}

function areAllFieldsFilled(formId) {
	var myForm = document.getElementById(formId);
	var isOK = true;
	if (myForm.elements["firstname"].value == '') { isOK = false; }
	if (myForm.elements["surname"].value == '') { isOK = false; }
	if (myForm.elements["phonenumber"].value == '') { isOK = false; }
	if (myForm.elements["email"].value == '') { isOK = false; }

/*	var count = 0;
	for (var j=0; j<myForm.elements["thema[]"].length; j++) {
		if (myForm.elements["thema[]"][j].checked) {
			count++;
		}
	}

	if (count == 0) { isOK = false; }
*/

	if (isOK) {
		enableButton('btn_submit');
	} else {
		disableButton('btn_submit');
	}
}