var state = "active";

function sel(x){
  if(x == state){
    return true;
  }
  else {
      		document.getElementById(state).style.display="none";
		document.getElementById(state+'text').style.display="none";
		document.getElementById(x).style.display="";
		document.getElementById(x+'text').style.display = "";
		state = x;


}

                

}