var app_code_name = navigator.appCodeName;
var app_name      = navigator.appName;
var app_version   = navigator.appVersion;
var user_agent    = navigator.userAgent;
var platform      = navigator.platform;

ie       = (platform == 'Win32' && app_name == 'Microsoft Internet Explorer');
netscape = (platform == 'Win32' && app_name == 'Netscape');
safari   = (platform == 'MacPPC' && app_name == 'Netscape');

if (!ie && !netscape && !safari) {netscape = true;};

function xx(x)
{
  if (x<10) {return '0'+x;}
  return x;
}

var popup_showing=0;

function mouse_over(x)
{
  if(popup_showing !=0 && popup_showing !=x) {hide_popup(popup_showing);}
  if (x==2) {show_popup(2);}
  if (x==3) {show_popup(3);}
  y=xx(x*2+3);
  id=document.getElementById('menu_butt_'+x);
  id.src='img/menu/bg_'+y+'_h.jpg';  
}

function mouse_out(x)
{
  if(popup_showing == x) {hide_popup(popup_showing);}
  y=xx(x*2+3);
  id=document.getElementById('menu_butt_'+x);
  if (popup_count != 2) {id.src='img/menu/bg_'+y+'.jpg';}; 
}

var popup_left = new Array('0','0','199','407','0','0');

var popup_showing = 0;
var popup_count   = 0;
var timer         = 0;

function show_popup(i)
{
  id = 'popup_'+i;
  id = document.getElementById(id);
  id.style.left = popup_left[i];
  clearTimeout(timer);
  popup_showing = i;
  y=xx(i*2+3);
  id=document.getElementById('menu_butt_'+i);
  id.src='img/menu/bg_'+y+'_h.jpg';  
}

function hide_popup(i)
{
  id = 'popup_'+i;
  id = document.getElementById(id);
  id.style.left = -1000;
  y=xx(i*2+3);
  id=document.getElementById('menu_butt_'+i);
  id.src='img/menu/bg_'+y+'.jpg';  
  clearTimeout(timer);
}

function mouse_over_popup(x)
{
  popup_count = 2;
  show_popup(x);
  clearTimeout(timer);
}

function mouse_out_of_popup(x)
{
  popup_count = 3;
  popup_number = x;
  timer = setTimeout('timed_out_popup()', 800);
}

function timed_out_popup()
{
  hide_popup(popup_showing);
}