function showinfo(name) {

  document.getElementById('precontemplation').style.display = "none";
  document.getElementById('contemplation').style.display = "none";
  document.getElementById('preparation').style.display = "none";
  document.getElementById('action').style.display = "none";
  document.getElementById('maintenance').style.display = "none";
  document.getElementById('relapse').style.display = "none";
  document.getElementById('intro').style.display = "none";

  document.getElementById(name).style.display = "block";

}