function multiLoad3(doc1, doc2, doc3)
{
if (doc1.length > 0)
{
  parent.navigationsfenster.location.href=doc1;
}
if (doc2.length > 0)
{
  parent.inhaltsfenster.location.href=doc2;
}
if (doc3.length > 0)
{
  parent.navigationsfensterre.location.href=doc3;
}
}