function sivamtime() {
  now=new Date();
  hour=now.getHours();
  min=now.getMinutes();
  sec=now.getSeconds();

if (min<=9) { min="0"+min; }
if (sec<=9) { sec="0"+sec; }
if (hour<=9) { hour="0"+hour; }


time =  hour + ":" + min + ":" + sec ;

if (document.getElementById) { document.getElementById('orario').innerHTML = time; }
else if (document.layers) {
 document.layers.theTime.document.write(time);
 document.layers.theTime.document.close(); }

setTimeout("sivamtime()", 1000);
}
window.onload = sivamtime;