versOk = ( ((navigator.appName == "Netscape")&& 
            (parseInt(navigator.appVersion) >= 3)) ||
        
           ((navigator.appName == "Microsoft Internet Explorer")&&
            (parseInt(navigator.appVersion)>=4))
          );
if (versOk) 
{		
  
  a1 = new Image();		a1.src ="img/1grafika.gif"
  a2 = new Image();		a2.src ="img/2grafika.gif"
  b1 = new Image();     b1.src ="img/1web.gif"
  b2 = new Image();     b2.src ="img/2web.gif"
  c1 = new Image();     c1.src ="img/1foto.gif"
  c2 = new Image();     c2.src ="img/2foto.gif"
    d1 = new Image();		d1.src ="img/1grafikaa.gif"
 d2 = new Image();		d2.src ="img/2grafikaa.gif"
  e1 = new Image();     e1.src ="img/1weba.gif"
  e2 = new Image();     e2.src ="img/2weba.gif"
  f1 = new Image();     f1.src ="img/1fotoa.gif"
  f2 = new Image();     f2.src ="img/2fotoa.gif"
  g1 = new Image();     g1.src ="img/g1a.jpg"
  g2 = new Image();     g2.src ="img/g1.jpg"
  h1 = new Image();     h1.src ="img/g2a.jpg"
  h2 = new Image();     h2.src ="img/g2.jpg"
  i1 = new Image();     i1.src ="img/g3a.jpg"
  i2 = new Image();     i2.src ="img/g3.jpg"
   j1 = new Image();     j1.src ="img/g4a.jpg"
  j2 = new Image();     j2.src ="img/g4.jpg"
   k1 = new Image();     k1.src ="img/g5a.jpg"
  k2 = new Image();     k2.src ="img/g5.jpg"
  l1 = new Image();     l1.src ="img/g6a.jpg"
  l2 = new Image();     l2.src ="img/g6.jpg"
  m1 = new Image();     m1.src ="img/g7a.jpg"
  m2 = new Image();     m2.src ="img/g7.jpg"
 n1 = new Image();     n1.src ="img/g8a.jpg"
  n2 = new Image();     n2.src ="img/g8.jpg"
  o1 = new Image();     o1.src ="img/g9a.jpg"
  o2 = new Image();     o2.src ="img/g9.jpg"
p1 = new Image();     p1.src ="img/g10a.jpg"
  p2 = new Image();     p2.src ="img/g10.jpg"
  r1 = new Image();     r1.src ="img/g11a.jpg"
  r2 = new Image();     r2.src ="img/g11.jpg"
  s1 = new Image();     s1.src ="img/g12a.jpg"
  s2 = new Image();     s2.src ="img/g12.jpg"
   t1 = new Image();     t1.src ="img/g13a.jpg"
  t2 = new Image();     t2.src ="img/g13.jpg"
    u1 = new Image();     u1.src ="img/g14a.jpg"
  u2 = new Image();     u2.src ="img/g14.jpg"
}


function rollOn(n)
{
 if (versOk)
        {
           light=eval(n+"2.src");
           document [n].src=light;
        }
}

function rollOff(n)
{
 if (versOk)
        {
           dark=eval(n+"1.src");
           document [n].src=dark;
        }
}