form: cancel button

[sabret00the]

if my submit button is

		<input type="submit" name="confession_report" value="delete confession" class="bginput" accesskey="s">

and i wanted the cancel button to redirect them to where they came from, would i do that via the php or the form and what would the cancel button be?

        <input type="submit" name="confession_report" value="cancel_confession_report" class="bginput">

sorry should be basic stuff