function xon(n,x){
  document.getElementById(x).style.backgroundColor = "#9c8b7b";
  activate(n);
}
function xoff(n,x){
  document.getElementById(x).style.backgroundColor = "#b9a992";
  deactivate(n);
}
function yon(x){
  document.getElementById(x).style.backgroundColor = "#9c8b7b";
}
function yoff(x){
  document.getElementById(x).style.backgroundColor = "#b9a992";
  }


  
function mon(x,bg){
  document.getElementById(x).style.backgroundColor = bg;
}
function moff(x,bg){
  document.getElementById(x).style.backgroundColor = bg;
}
  
function mon2(x){
  document.getElementById(x).style.backgroundColor = "#9c8b7b";
}
function moff2(x){
  document.getElementById(x).style.backgroundColor = "#b9a992";
} 

 
function zon(n){
  var x = "k_" + n;
  document.getElementById(x).className = "nav3";
  activate(n);
}
function zoff(n){
  var x = "k_" + n;
  deactivate(n);
  document.getElementById(x).className = "nav2";
  }