// JavaScript
function show(sm) {
  document.getElementById(sm).style.visibility = "visible";
  document.getElementById(sm).style.display = "block";
  if(sm!="sm0"){
	  document.getElementById('sm0').style.visibility = "hidden";
	  document.getElementById('sm0').style.display = "none";
  }
  if(sm!="sm1"){
	  document.getElementById('sm1').style.visibility = "hidden";
	  document.getElementById('sm1').style.display = "none";
  }
}