var imges = [];

for( var i = 0; i< 10; i++ ) {
   imges['p'+i] = new Image();
   imges['p'+i].src= "http://f1el.pl/themes/Theme/grafika/czas/c"+i+".png";
}
imges['pd'] = new Image();
imges['pd'].src="d.png";

function zegar() {
  terazJest = String(/[\d:]{8}/.exec(Date())).replace( /:/g, '' );
  for( var i=0; i < 6 ;i++ )
      document.images['p'+i].src=imges['p'+terazJest.charAt(i)].src
  setTimeout("zegar()",1000);
}