restricting a submit button

[climberusa]

Hi,
I was wondering if anyone new of a way to restrict a submit button on an html form with php. Specifically, I only want the button to be clicked with the mouse for submission rather than with the mouse or by hitting enter. I am having clients accidentally hit enter half way through filling out a form and sending incomplete information. I appreciate any help.
Thanks
Jeff

[thorpe]

php cant do this, but javascript can. google for 'javascript disable submit'.

[climberusa]

Ok, that's what I suspected. Thanks!
Jeff