var w3c = (document.getElementById) ? 1:0
var ns4 = (document.layers) ? 1:0
var ie4 = (document.all) ? 1:0


var vis = 1;


// ---------------------Initiation----------------------

function init() 
{
	if (w3c) 		//  document.getElementById('layername').style.visibility = 'hidden';
	{
 		layerRef = ".getElementById('";
		styleRef = "').style";
  
	}
	else if (ns4)	//  document.layername.visibility = 'hidden';
	{
		layerRef = ".";
		styleRef = " ";
	   
		eval ("document" + layerRef + "a1" + styleRef + ".visibility='hidden'");
		
	
	}
 	else if  (ie4)//  document.all.layername.style.visibility = 'hidden';
	{
   		layerRef = ".all";
		styleRef = ".style";

  	}
	eval ("document" + layerRef + "a1" + styleRef + ".visibility='hidden'");
	eval ("document" + layerRef + "a2" + styleRef + ".visibility='hidden'");
	eval ("document" + layerRef + "a3" + styleRef + ".visibility='hidden'");
	eval ("document" + layerRef + "a4" + styleRef + ".visibility='hidden'");


}

// ---------------------Functions----------------------

function hidelayer(layername) 
{
	eval ("document" + layerRef + layername + styleRef + ".visibility='hidden'");
	vis = 0;
} 
function showlayer(layername) 
{
	eval ("document" + layerRef + layername + styleRef + ".visibility='visible'");
	vis = 1;
} 







// END OF LINE