var merke_navi														= [];

function showSubnavi(nid, ebene)
  {
  clearNavi(ebene);
  if(document.getElementById('sub'+nid))
	{
	document.getElementById('sub'+nid).style.display				= 'block';
	}
  merke_navi[ebene]													= nid;
  }

function clearNavi(ebene)
  {
  if(merke_navi && merke_navi[ebene] && document.getElementById('sub'+merke_navi[ebene]))
	{
	for(i=merke_navi.length;i>=ebene;i--) {
	  if(document.getElementById('sub'+merke_navi[i]))
		{
		document.getElementById('sub'+merke_navi[i]).style.display	= 'none';
		}
	  }
	}
  }