date verification

i m using the .js file to do all the validate functions.

<script language="JavaScript" src="nnn.js" type="text/javascript">

now i face the problem in validating the date.

<tr>
<td align="right">date</td>
<td><INPUT TYPE="text" NAME="txtdate"
onchange="js function()">
</td>
</tr>


my problem is how to write the function to verify date in my nnn.js file.
thx.

How do you want your date to look?

05/08/31
2005/08/31
31/08/2005
08/31/2005
August 31, 2005
Wednesday, August 31, 2005
2005.08.31
08-31-05

[and so on, and so on]

My point being, there are a million ways to write a date.
The easiest way is to decide on one convention (perhaps localized to your audience) and encourage your users to enter the date that way.
Another common workaround is to use a datepicker script, this way the user doesn't manually enter a date.

the format of my date is dd/mm/yyyy.
is it possible to get the datepicker script in that format (dd/mm/yyyy)?

another question is , if i want user to key in the date (dd/mm/yyyy) manually, how to verify the date(with the function code in my .js file, seperately from the html) and set the format to dd/mm/yyy in the textfield(with / /).


thanks.