function hideShowLayer(layerName, doWhat)
{	
	var elm = null;
	var styleObject=null;
	
	
		
	if (doWhat == "SHOW")
	{
		//alert("Show the Layer");	
		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");
		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;
	}
}