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)
{
	m0 = new Image(); 
	m0.src = "img/m000.jpg"; 
	m0_on = new Image(); 
	m0_on.src = "img/m001.jpg";
	
	m1 = new Image(); 
	m1.src = "img/m100.jpg"; 
	m1_on = new Image(); 
	m1_on.src = "img/m101.jpg"
		
	m2 = new Image(); 
	m2.src = "img/m200.jpg"; 
	m2_on = new Image(); 
	m2_on.src = "img/m201.jpg";
	
	m3 = new Image(); 
	m3.src = "img/m300.jpg"; 
	m3_on = new Image(); 
	m3_on.src = "img/m301.jpg";
	
	m4 = new Image(); 
	m4.src = "img/m400.jpg"; 
	m4_on = new Image(); 
	m4_on.src = "img/m401.jpg";
	
	m5 = new Image(); 
	m5.src = "img/m500.jpg"; 
	m5_on = new Image(); 
	m5_on.src = "img/m501.jpg";
	
}

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

function img_off(imgName)
{
		imgOut = eval(imgName + ".src");
	    document [imgName].src = imgOut;	
}

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

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