function getMtt()
{
	var form = document.dwnldForm;
    if(form.lang.value == ""){
    	alert(downErrorText1);
        return;
    }
    if(form.lang.value == "de"){
    	if(form.postcode.value == 0){
        	alert(downErrorText3);
        	return;
        }
    }
    else
    	form.postcode.value = "NULL";

    if(form.model.value == 0){
        alert(downErrorText2);
        return;
    }

	form.action = "createsejar.php";
	form.submit();
}

function showSelBox()
{
	var form = document.dwnldForm;
    var plzRow = document.getElementById("plz");
    if(form.lang.value == "de")
    	plzRow.style.display = "";
    else
    	plzRow.style.display = "none";
}