function showLayer1() {document.getElementById("sw1").style.visibility="visible";}		 
function hideLayer1() {document.getElementById("sw1").style.visibility="hidden";}		 
function showLayer2() {document.getElementById("sw2").style.visibility="visible";}
function hideLayer2() {document.getElementById("sw2").style.visibility="hidden";}		 
function showLayer3() {document.getElementById("sw3").style.visibility="visible";}
function hideLayer3() {document.getElementById("sw3").style.visibility="hidden";}		 
function showLayer4() {document.getElementById("sw4").style.visibility="visible";}
function hideLayer4() {document.getElementById("sw4").style.visibility="hidden";}		 
function showLayer5() {document.getElementById("sw5").style.visibility="visible";}
function hideLayer5() {document.getElementById("sw5").style.visibility="hidden";}
function showLayerR1() {document.getElementById("se1").style.visibility="visible";}		 
function hideLayerR1() {document.getElementById("se1").style.visibility="hidden";}		 
function showLayerR2() {document.getElementById("se2").style.visibility="visible";}
function hideLayerR2() {document.getElementById("se2").style.visibility="hidden";}		 
function showLayerR3() {document.getElementById("se3").style.visibility="visible";}
function hideLayerR3() {document.getElementById("se3").style.visibility="hidden";}		 
function showLayerR4() {document.getElementById("se4").style.visibility="visible";}
function hideLayerR4() {document.getElementById("se4").style.visibility="hidden";}		 
function showLayerR5() {document.getElementById("se5").style.visibility="visible";}
function hideLayerR5() {document.getElementById("se5").style.visibility="hidden";}