function showhide(id) {
  if (document.getElementById) {
    if (document.getElementById(id).style.display == "block") {
      document.getElementById(id).style.display = "none";
    }else{
      document.getElementById("recipe1").style.display = "none";
      document.getElementById("recipe2").style.display = "none";
      document.getElementById(id).style.display = "block";
    }
  }
}