var ns;
var sk;
var ie;
browser_name = navigator.appName;
browser_version = parseFloat(navigator.appVersion); 
if (browser_name == "Netscape" && browser_version >= 3.0) { brow = 'true'; }
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 4.0) { brow = 'true'; }
else { brow = 'false'; }

if (browser_name == "Netscape" && browser_version >= 3) 
  {
    ns=true;
    ie=false;
    sk=false;
  }
else if (browser_name == "Sylaba" && browser_version >= 3)
  {
    sk=true;
    ns=false;
    ie=false;
  }
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 4)
  {
    ie=true;
    ns=false;
    sk=false;
  }
else
  {
    ns=false;
    sk=false;
    ie=false;
  }

if(brow)
{
	menu = new Image(780,60);
  	menu.src = "img/menu.jpg";
	
	m2 = new Image(); 
	m2.src = "img/m200.jpg"; 
	m2_on = new Image(); 
	m2_on.src = "img/m201.jpg";
	
	m4 = new Image(); 
	m4.src = "img/m400.jpg"; 
	m4_on = new Image(); 
	m4_on.src = "img/m401.jpg";
	
	m6 = new Image(); 
	m6.src = "img/m600.jpg"; 
	m6_on = new Image(); 
	m6_on.src = "img/m601.jpg";
	
	m8 = new Image(); 
	m8.src = "img/m800.jpg"; 
	m8_on = new Image(); 
	m8_on.src = "img/m801.jpg";
	
	g = new Image(); 
	g.src = "img/g00.gif"; 
	g_on = new Image(); 
	g_on.src = "img/g01.gif";
	
	s = new Image(); 
	s.src = "img/s00.gif"; 
	s_on = new Image(); 
	s_on.src = "img/s01.gif";
	
	n = new Image(); 
	n.src = "img/n00.gif"; 
	n_on = new Image(); 
	n_on.src = "img/n01.gif";
	
	l = new Image(); 
	l.src = "img/l00.gif"; 
	l_on = new Image(); 
	l_on.src = "img/l01.gif";
	
}

function img_on(imgName)
{
  if(brow)
  {
    imgOn = eval(imgName + "_on.src");
    document [imgName].src = imgOn;
  }
}

function img_off(imgName)
{
  if(brow)
  {
    imgOut = eval(imgName + ".src");
    document [imgName].src = imgOut;
  }
  else if(sk || ns)
  {
    imgOut = eval(imgName + ".src");
    document.menu.document [imgName].src = imgOut;
  }
}

function sym(gdzie,co)
{
  if(ie)
  {
    document.images[gdzie].src=eval(co+".src");
  }
  else if(sk || ns)
  {
    document.menu.document.images[gdzie].src=eval(co+".src");
  }
} 

function okno(url,nazwa,opis) 
{  
	window.open(url,nazwa,opis);
}

function oknooff(nazwa) 
{  
	window.close(nazwa);
}