function layerButton1Show()
{
	document.getElementById("LayerB1").style.visibility="visible";
}

function layerButton1Hide()
{
	document.getElementById("LayerB1").style.visibility="hidden";
}

function layerButton2Show()
{
	document.getElementById("LayerB2").style.visibility="visible";
}

function layerButton2Hide()
{
	document.getElementById("LayerB2").style.visibility="hidden";
}

function layerButton3Show()
{
	document.getElementById("LayerB3").style.visibility="visible";
}

function layerButton3Hide()
{
	document.getElementById("LayerB3").style.visibility="hidden";
}

function layerButton4Show()
{
	document.getElementById("LayerB4").style.visibility="visible";
}

function layerButton4Hide()
{
	document.getElementById("LayerB4").style.visibility="hidden";
}

function layerButton5Show()
{
	document.getElementById("LayerB5").style.visibility="visible";
}

function layerButton5Hide()
{
	document.getElementById("LayerB5").style.visibility="hidden";
}