function sw(name) {
  if (document.getElementById(name).style.visibility == "visible"){;
  	document.getElementById(name).style.visibility = "hidden";
  	document.getElementById(name).style.display = "none";
  }
  else {
  	document.getElementById(name).style.visibility = "visible";
  	document.getElementById(name).style.display = "inline";
  }
}