If the user forgets his or her lastname and date of birth
the user should know that he did not entered the the lastname
and birthdate by using the button and then when the user types
in the first name and date of birth. He should use the same button
which he did used initailly and forces the button to go the server then. I will appreciate your help.

Sorry, I don't understand the button thing. Can you explain on that?

_________________________
- Vijay G
Strive for Perfection

Instead of using submit I have to use button
<Input type = button value =save>
because the button doesnot go the server, but we have to
force the button to go the server in this case. I hope you
understand my explanation

let me know if you have this problem.
you want user to enter all the entities and then allow the save button to go to server and do the needful activity, I mean posting the values.
If this is the case, you have two steps :

1. you can write client side activation [javascript], where it will check if all the entries have been made. if true,

2. All the three entries are posted to server and checked with the backend if the entry is valid.
Then you know what to do,

if condition true
statement
else
statement

Let me know if I explained you that you wanted.
regards

sinapra

<Input type="button" value="save" onclick="Javascript:document.formname.submit();">

Make sure you give the name of the form there that you use in the <form> tag of that page.

Cheers!

_________________________
- Vijay G
Strive for Perfection