function presets () {
}
var sent = "";
function Go() {
error = "";
anz = "";
if (document.formular.feld11.value == "") { error += "\n- Name"; anz++; }
if (document.formular.feld12.value == "") { error += "\n- Email"; anz++; }
if (anz == 1) { alert("Please complete this field: " + error + "\n"); return (false); }
if (anz > 1) { alert("Please complete these fields: " + error + "\n"); return (false); }
error = "";
anz = "";
if (anz >= 1) { alert(error + "\n"); return (false); } 
sent = 1;
document.formular.submit(); 
}
function Goback() {
document.formularback.submit(); 
}