form validation

[prasoon]

I am having three submit buttons in my form one display, one delete, and other one is add.

and i want to validate the field 1 in the form before clicking
on delete or add button.

other condition is if all the fileds in the form are blank and i click on display button then it should show me all the records form the DB, which is working fine.
also for the same button when i type any of the fields on the form it should show me details regarding that thing only.

how can i put the form validations satisfyng all the conditions?

pls help

 

[nicsin]

have a look at this. ask again if you don't understand something

<script>
function validateForm(){
if((document.getElementById('hdn')).value=='1') alert('button 1 pressed');
else if((document.getElementById('hdn')).value=='2') alert('button 2 pressed');
else if((document.getElementById('hdn')).value=='3') alert('button 3 pressed');
}
</script>


<form action='myAction.asp' method='post' onSubmit='validateForm();'>
<input type='text' id='field1' name='field1'>
<input type='hidden' id='hdn' name='hdn' value='0'>
<input type='submit' id='btn1' value='button 1' onClick='hdn.value="1"'>
<input type='submit' id='btn2' value='button 2' onClick='hdn.value="2"'>
<input type='submit' id='btn3' value='button 3' onClick='hdn.value="3"'>
</form>

N