var zmkurwamac = 0;
function change()
{
zmkurwamac = zmkurwamac + 1;
if (zmkurwamac % 2 == 0)
{
ala = "<img src = 'images/m1.jpg' align = 'right' onclick = 'change()'>";
document.getElementById('mapa').innerHTML = ala;
zmkurwamac -2;
}
else 
{
ala = "<img src = 'images/m2.jpg' align = 'right' onclick = 'change()'>";
document.getElementById('mapa').innerHTML = ala;
zmkurwamac -2;
}
}