if (document.layers) {n=1;ie=0}
if (document.all) {n=0;ie=1}
var visible;
var hidden;

function init() 
{
	if (document.layers) 
	{
  		visible = 'show';
  		hidden = 'hide';
	}	 
	else if (document.all) 
	{
  	visible = 'visible';
  	hidden = 'hidden';	
	}
}
function isHidden(layerName)
{
	if(document.getElementById)
	{
		val = document.getElementById(layerName).style.visibility;
	}
			
	if ( document.layers )
	{
		val = eval("document." + layerName + ".visibility");  
	}
	else if (document.all)
	{
		val = eval(layerName + ".style.visibility");
	}
	//alert(val);
	if (val == hidden) 
		return true;
	else 
		return false;
	
	
}

function hideShowLayer(layerName, doWhat)
{	
	var elm = null;
	var styleObject=null;
	
	if (doWhat == "SHOW")
	{
		//alert("Show the Layer" + layerName);	
		if(document.getElementById)
		{
			document.getElementById(layerName).style.visibility = 'visible';
		}
			
		if ( document.layers )
		{
			eval("document." + layerName + ".visibility = 'visible'");  
		}
		else if (document.all)
		{
			eval(layerName + ".style.visibility = 'visible'");
		}			
	}
	else if (doWhat == "HIDE")
	{
		//alert("Hide the Layer" + layerName);
		if(document.getElementById)
		{
			document.getElementById(layerName).style.visibility = 'hidden';
		}
		if ( document.layers )
		{
			eval("document." + layerName + ".visibility = 'hidden'"); 
		}
		else if (document.all)
		{
			eval(layerName + ".style.visibility = 'hidden'");
		}			

	}
	else
	{
		return false;
	}
}
function goBack() 
{ 
window.history.back();
}