var current='level0';

function showHide(id)
{                         
  if (id!='')
  {
    CloseEditField();
    (current==0)?void(0):document.getElementById(current).style.display='none';
    document.getElementById(id).style.display='block';
    current=id;
  }
  return false;
}

function CloseEditField()
{
  var q=document.getElementById('edithint');
  if (q)
    q.style.visibility="hidden";
}