<!-- 
function NIW(img, width, height)
{
	var url = "img_viewer.php?img=" + img;
	var name = 'img_window';
	var left = (screen.availWidth - width) / 2;
	var top = (screen.availHeight - height) / 2;
	var open = window.open(url, name, 'left=' + left + ',top=' + top + ',width=' + width + ',height=' + height + ',menubar=no,status=no,location=no,resizable=no');
	open.focus();
}

function xGetElementById(e)
{
  if (typeof(e) != 'string') return e;
  if (document.getElementById) e = document.getElementById(e);
  else if (document.all) e = document.all[e];
  else e = null;
  return e;
}

function hideElement(e)
{
	var element = xGetElementById(e);
	element.style.display = "none";
}

function showElement(e)
{
	var element = xGetElementById(e);
	element.style.display = "block";
}

function hideLayer(layerName)
{
	if (document.getElementById) 
	{
		var targetElement = document.getElementById(layerName);
		targetElement.style.visibility = 'hidden';
	}
}
// -- End -->