accessing an array of inputs

[grahowler]

Hi, my question is regarding how to access an array of inputs that is generated on the fly as an array.

For instance, I have information about books that can be accessed by an administrator in a catalogue. They can select a category and that will generate as many rows of data on each book as there are books in the category. The resultant form might look like this...

<form action="none.php" method="post" name="form1" onsubmit="return validateForm(form1)">
<!-- the book's ID -->
<input type="hidden" name="book[0][0]" value="1">
<!-- the book's name -->
<input type="text" name="book[0][1]" value="whatever"><br>
<!-- the book's author -->
<input type="text" name="book[0][2]" value="whatever"><br>
<!-- the book's ISDN -->
<input type="text" name="book[0][3value="whatever"><br>
<br>
<!-- the book's ID -->
<input type="hidden" name="book[1][0]" value="2">
<!-- the book's name -->
<input type="text" name="book[1][1]" value="whatever"><br>
<!-- the book's author -->
<input type="text" name="book[1][2]" value="whatever"><br>
<!-- the book's ISDN -->
<input type="text" name="book[1][3]" value="whatever"><br>
<!-- You get the idea! -->
<input type="submit" name="goButton" value="Go">
</form>



What I am wondering is how to access any of the values of the input named "book" for a JavaScript form validation.

<script language="javascript">

function validateForm(form)
{
// this returns 'undefined'
//alert(form.book);

//this returns nothing at all and causes the function to fail
alert(form.book[0]);
return false;
}

</script>

any ideas?

thx in advance