function toggle(object)
	{
		  if (document.getElementById) {
		    if (document.getElementById(object).style.visibility == 'visible')
		      document.getElementById(object).style.visibility = 'hidden';
		    else
		      document.getElementById(object).style.visibility = 'visible';
		  }

		  else if (document.layers && document.layers[object] != null) {
		    if (document.layers[object].visibility == 'visible' ||
		        document.layers[object].visibility == 'show' )
		      document.layers[object].visibility = 'hidden';
		    else
		      document.layers[object].visibility = 'visible';
		  }

		  else if (document.all) {
		    if (document.all[object].style.visibility == 'visible')
		      document.all[object].style.visibility = 'hidden';
		    else
		      document.all[object].style.visibility = 'visible';
		  }

		  return false;
	}