// JavaScript Document
function style_display_on() {

   if (window.navigator.appName.indexOf("Netscape") != -1) { // Mozilla, Safari,...
      return "table-row";
   } else if (window.navigator.appName.indexOf("Microsoft") != -1) { // IE
      return "block";
   }
}
function fmenu01(){
if( document.getElementById("menu01").style.display == "none"){
    document.getElementById("menu01").style.display = style_display_on();
	document.getElementById("menu02").style.display = "none";
	document.getElementById("menu03").style.display = "none";
  }
else{
    document.getElementById("menu01").style.display = "none";
  }
}

function fmenu02(){
if( document.getElementById("menu02").style.display == "none"){
    document.getElementById("menu02").style.display = style_display_on();
	document.getElementById("menu01").style.display = "none";
	document.getElementById("menu03").style.display = "none";
  }
else{
    document.getElementById("menu02").style.display = "none";
  }
}

function fmenu03(){
if( document.getElementById("menu03").style.display == "none"){
    document.getElementById("menu03").style.display = style_display_on();
	document.getElementById("menu01").style.display = "none";
	document.getElementById("menu02").style.display = "none";
  }
else{
    document.getElementById("menu03").style.display = "none";
  }
}