function CheckAndSubmitForm(thelayer,theform){
  if (document.layers) myform=document.layers[thelayer].document.forms[theform];
  else myform=document.forms[theform];
  if (myform.elements["Suche"].value=="") {
    if ((myform.elements["StoffID"].value=="")&&(myform.elements["Anfangsbuchstabe"].value=="")){
      alert("Geben Sie mindestens 1 Buchstaben zur Suche ein");
      return false;
    }
  myform.submit();
    return true;
  }
  myform.elements["Anfangsbuchstabe"].value="";
  myform.elements["StoffID"].value="";
  myform.submit();
}
function SetAnfangsbuchstabeAndSubmit(thelayer,theform,a){
  if (document.layers) myform=document.layers[thelayer].document.forms[theform];
  else myform=document.forms[theform];
  myform.elements["StoffID"].value="";
  myform.elements["Suche"].value="";
  myform.elements["Anfangsbuchstabe"].value=a;
  myform.submit();
}
function SetSearchAndSubmit(thelayer,theform){
  if (document.layers) myform=document.layers[thelayer].document.forms[theform];
  else myform=document.forms[theform];
  myform.elements["StoffID"].value="";
  myform.elements["Anfangsbuchstabe"].value="";
  return CheckAndSubmitForm(thelayer,theform);
}
function SetStoffIDAndSubmit(thelayer,theform,a){
  if (document.layers) myform=document.layers[thelayer].document.forms[theform];
  else myform=document.forms[theform];
  myform.elements["StoffID"].value=a;
  myform.submit();
}