function menubtnaction(menubtn, event) {

if (event=="btnover") {
  window.document.getElementById("menu_btn"+menubtn+"_left").setAttribute("background","");
  window.document.getElementById("menu_btn"+menubtn).setAttribute("background","");
  window.document.getElementById("menu_btn"+menubtn+"_right").setAttribute("background","");
  window.document.getElementById("menu_link"+menubtn).style.color="#ffffff";
  window.document.getElementById("sub_menu"+menubtn).style.display="block";
}

if (event=="btnout") {
  window.document.getElementById("menu_btn"+menubtn+"_left").setAttribute("background","images/fon7.gif");
  window.document.getElementById("menu_btn"+menubtn).setAttribute("background","images/fon3.gif");
  window.document.getElementById("menu_btn"+menubtn+"_right").setAttribute("background","images/fon8.gif");
  window.document.getElementById("menu_link"+menubtn).style.color="#0066CC";
  window.document.getElementById("sub_menu"+menubtn).style.display="none";
}






if (event=="btnover_no_submenu") {
  window.document.getElementById("menu_btn"+menubtn+"_left").setAttribute("background","");
  window.document.getElementById("menu_btn"+menubtn).setAttribute("background","");
  window.document.getElementById("menu_btn"+menubtn+"_right").setAttribute("background","");
  window.document.getElementById("menu_link"+menubtn).style.color="#ffffff";
}

if (event=="btnout_no_submenu") {
  window.document.getElementById("menu_btn"+menubtn+"_left").setAttribute("background","images/fon7.gif");
  window.document.getElementById("menu_btn"+menubtn).setAttribute("background","images/fon3.gif");
  window.document.getElementById("menu_btn"+menubtn+"_right").setAttribute("background","images/fon8.gif");
  window.document.getElementById("menu_link"+menubtn).style.color="#0066CC";
}







if (event=="sub_menu_over") {
  window.document.getElementById("menu_btn"+menubtn+"_left").setAttribute("background","");
  window.document.getElementById("menu_btn"+menubtn).setAttribute("background","");
  window.document.getElementById("menu_btn"+menubtn+"_right").setAttribute("background","");
  window.document.getElementById("menu_link"+menubtn).style.color="#ffffff";
  window.document.getElementById("sub_menu"+menubtn).style.display="block";
}

if (event=="sub_menu_out") {
  window.document.getElementById("menu_btn"+menubtn+"_left").setAttribute("background","images/fon7.gif");
  window.document.getElementById("menu_btn"+menubtn).setAttribute("background","images/fon3.gif");
  window.document.getElementById("menu_btn"+menubtn+"_right").setAttribute("background","images/fon8.gif");
  window.document.getElementById("menu_link"+menubtn).style.color="#0066CC";
  window.document.getElementById("sub_menu"+menubtn).style.display="none";
}







if (event=="sub_menu_btn_over") {
  window.document.getElementById("sub_menu_link"+menubtn).style.color="#ffffff";
  window.document.getElementById("sub_menu_btn"+menubtn).style.background="#c4cbe6";
}

if (event=="sub_menu_btn_out") {
  window.document.getElementById("sub_menu_link"+menubtn).style.color="#0066CC";
  window.document.getElementById("sub_menu_btn"+menubtn).style.background="#ffffff";
}


}