function showHideByID(id) { 
    act_state = document.getElementById(id).style.display;   
    if (act_state == "none")
      document.getElementById(id).style.display = "";
    else 
      document.getElementById(id).style.display = "none";
  }

  function hideByID(id) { 
   document.getElementById(id).style.display = "none";
  }

  function showByID(id) { 
    document.getElementById(id).style.display = "";
  }

  function showDozaPopup() {
    id = 'kd_doza_dialog';
    document.getElementById(id).className = "dialog popup"
    showByID(id);
  }
  
  function hideDozaPopup() {
    id = 'kd_doza_dialog';
    document.getElementById(id).className = "dialog hidden"
    showByID(id);
  }