var roz = new Date().getTime()-(1731621435*1000);

function zegar(){
miesiace= new Array ('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December')
D = new Date();
D.setTime(D.getTime()-roz);
G = D.getHours();
M = D.getMinutes(); M=M<10?'0'+M:M;
S = D.getSeconds(); S=S<10?'0'+S:S;
r = D.getFullYear();
m = miesiace[D.getMonth()];
d = D.getDate();

document.getElementById('czas').innerHTML=' '+ G + ':' + M + ':' + S;
document.getElementById('data').innerHTML=' '+ d + ' ' + m + ' ' + r + ' ' + 'r.'
setTimeout('zegar()', 1000);
}