[Javascript] variable called 'abstract'

[Richard Lewis]

I've got a form with a text input called 'abstract'. When I try and get
its value:
    document.forms[0].abstract.value;

I get this error:
    "Error: missing name after . operator"

(This is in Firefox 1.0.1)

Does anyone know why? 'abstract' isn't now a keyword is it?

Cheers,
Richard