function LayerOff(whichLayer)
{
	if (document.getElementById)
	{
	// this is the way the standards work
	var style2 = document.getElementById(whichLayer).style;
	style2.display = "none";
	}
	else if (document.all)
	{
	// this is the way old msie versions work
	var style2 = document.all[whichLayer].style;
	style2.display = "none";
	}
	else if (document.layers)
	{
	// this is the way nn4 works
	var style2 = document.layers[whichLayer].style;
	style2.display = "none";
	}
}

function LayerOn(whichLayer)
{
	if (document.getElementById)
	{
	// this is the way the standards work
	var style2 = document.getElementById(whichLayer).style;
	style2.display = "block";
	}
	else if (document.all)
	{
	// this is the way old msie versions work
	var style2 = document.all[whichLayer].style;
	style2.display = "block";
	}
	else if (document.layers)
	{
	// this is the way nn4 works
	var style2 = document.layers[whichLayer].style;
	style2.display = "block";
	}
}