Oh...and as another minor comment: Named <form>s are considered obsolete. You should give the <form> an id instead and use document.getElementById() to "find" the form. Of document.forms and forget the id if you know you will only have one <form> on the page.
An optimist sees the glass as half full.
A pessimist sees the glass as half empty.
A realist drinks it no matter how much there is.