Appending the data in frame or popup window

This is my file trial.js(extrenal js file)

function getstarttime()
{
var start = new Date();
var timestamp = start.getHours()+'.'+start.getMinutes()+'.'+start.getSeconds()+'.'+start.getMilliseconds();
return timestamp;
}

function getendtime()
{
var end = new Date();
var timestamp = end.getHours()+'.'+end.getMinutes()+'.'+end.getSeconds()+'.'+end.getMilliseconds();
return timestamp;
}

I want to write function writelog which will write the above starttime and endtime information in the frame or popup window .

Then in my html page i want to use this function like this...

var st = starttime()
alert("click ok alertbox1");
var et = endtime()
writelog(st,et);

I want to generate frame or popup showing startime, endtime using this writelog(st,et) function.

var st1 = starttime();
alert("click ok alertbox2");
var et1 = endtime();
writelog(st1,et1);
i want to append this starttime end time in the same window or frame below the above starttime endtimefor alertbox1.

i am facing problem here.i donot know how to append the data in the frame or popup window.

can somebody help me in writing the function writelog(startime,endtime)
this function should be generi like startime and endtime functions and can be used anywhere in html page to write starttime and endtime.

Why are you having so much trouble doing this? If I remember correctly his is your 5th time asking this.

Eric

i donot know how to append the data in the frame or popup window.
using your program i can write the data in the frame once.then next time i call the same function the previous data is overwritten by new data somthing like this

starttime:13.23.21.11
endtime:13.23.21.12

but i want to append my o/p after each call like this

starttime:13.23.21.11
endtime:13.23.21.12

starttime:13.23.31.41
endtime:13.23.31.42

starttime:13.24.21.11
endtime:13.24.21.12

on making function call the data is appended ..but using code u have provided the o/p is overwritten

so how should i do that?

popUpId.document.body.innerHTML += "the string";

parent.frameName.document.body.innerHTML = "the String";

Eric

i want to call the writelog function in 1.html and once it is called the two frames shud appear .and right frame (2.html) will display o/p

top.frames["right_frame"].document.getElementsByTagName('body')[0].innerHTML=txt;

what does getElementsByTagName('body')[0] mean? u have multiple body tags???
why not just give document.body as eric has suggested?

here are my three files.

file 1.html
<html>
<head>
<script language="JavaScript" src="trial.js">
</script>
<script language="JavaScript">

function calculate()
{
var time = getstarttime()
alert("click ok to continue");
var end = getendtime();
writelog(time,end);
}
</script>
</head>
<body bgcolor = "pink">
<script>
calculate();
</script>
</body>
</html>

file trail.js
function getstarttime()
{
var start = new Date();
var timestamp = start.getHours()+'.'+start.getMinutes()+'.'+start.getSeconds()+'.'+start.getMilliseconds();
return timestamp;
}

function getendtime()
{
var end = new Date();
var timestamp = end.getHours()+'.'+end.getMinutes()+'.'+end.getSeconds()+'.'+end.getMilliseconds();
return timestamp;
}

function writelog(str,end)
{
document.write('<FRAMESET cols="70%,30%">')
document.write('<FRAME SRC="1.html" name="left_frame">')
document.write('<FRAME SRC="2.html" name="right_frame">')
document.write('</FRAMESET>')
var txt =str+'<br>'+end ;
top.frames["right_frame"].document.getElementsByTagName('body')[0].innerHTML=txt;
}

file 2.html
<HTML>
<HEAD>

</HEAD>
<BODY>
<script language="JavaScript/text">
var str = ''
var etr = ''
document.write("the starttime is"+str);
document.write("the end time is"+etr);
</script>
</body>
</html>

the error i am getting is top.frames["right_frame"].document.getElementsByTagName is null or not a object...

why i am getting this error?

i need to have the separate window...frame...popup....
i want to display the o/p there.
actually i want generic functions.
now i can put this function as probes and get the information.
Means i want to put getstarttime() before any element ..getendtime() after the element and then use this function writelog() to diaplay data..i should be able to call this function anywhere in my page and create new page showing outut.