Need Some help in setting up my mailform:

Hi friends,

I would like someone to help me in this Mail Form, as i actually want when I click on button it should not send the mail if nothing is filled in. And like the third field is for mobile number i would like it to check if numeric charaters are written… or else if must not go further. I also want it to check the ‘@’ in the email field.

As my someone told me to use component for the form which is much better…

All the files are in this link it also includes a PHP Script…

http://www.designoman.net/mailform.zip

I would really appereciate if somone could really help me out.
Thanks a lot in Advance,
Regards.