function remove1_(remover){
 var eltern = null;
 eltern = document.getElementById(remover);
 var elemente = eltern.childNodes;
 for (var i=elemente.length-1;i>=0;i--){
  if(elemente[i].selected){
  }else{
   try{
    eltern.removeChild(document.getElementById(elemente[i].id));
   }catch(e){}
  }
 }
}

function remove_(eltern, child){
 try{
  document.getElementById(eltern).removeChild(document.getElementById(child));
 }catch(e){}
}

function checkvalue(id, limit, wert){
 document.getElementById(id).style.color='red';
 if(isNaN(wert)){
  document.getElementById(id).value = 0;
 }else if(wert>limit || wert<0){
  document.getElementById(id).value = 0;
 }else {
  document.getElementById(id).style.color='green';
 }
}

function setFontFett(id){
 var tags = null;
 tags = document.getElementsByTagName("tr");
 for (var i=0;i<tags.length;i++){
  tags[i].style.fontWeight = 'normal';
 }
 document.getElementById(id).style.fontWeight = 'bold';
}