<form name="form1"><INPUT TYPE="TEXT" NAME="tid" SIZE="8"></form><BR>
<SCRIPT LANGUAGE="JavaScript">
var sec = 0;
var min = 0;
var tim = 0;
n1 = ".";
n2 = ".";

function upd(){
sec++;

if (sec==60){
min++;
sec = 0;
}

if (min==60){
tim++;
min = 0;
}

document.form1.tid.value=tim + n1 + min + n2 + sec;

window.setTimeout("upd()", 1000)
}
upd();
</SCRIPT>