/* Show/hide display options JavaScript  */

function toggleLayer( whichLayer, clickedLink )
{
  var elems, vis;
  if( document.getElementsByName ) // this is the way the standards work
  {
		elems = document.getElementsByName( whichLayer );  
  }
  
  var clickedParent = clickedLink.parentNode.parentNode;
  


/*
  else if( document.all ) // this is the way old msie versions work
      elem = document.all[whichLayer];
  else if( document.layers ) // this is the way nn4 works
    elem = document.layers[whichLayer];
*/
  
  for (var i=0; i<elems.length; i++)
  {
//	alert(clickedParent.id +' '+elems[i].parentNode.id);  
  	if (clickedParent != elems[i].parentNode) continue;
	//if (clickedParent != elems[i].parentNode.parentNode.id) continue;
	vis = elems[i].style;
	if(vis.display==''&&elems[i].offsetWidth!=undefined&&elems[i].offsetHeight!=undefined)  
		vis.display = (elems[i].offsetWidth!=0&&elems[i].offsetHeight!=0)?'block':'none';
	vis.display = (vis.display==''||vis.display=='block')?'none':'block';	
  }
}