[Moo] Swiff problem with 100% Flash size - Firefox 3.5.7

[soundseller]

Hi,
I am having following problem:
In firefox 3.5.7 using swiff, if I set the flash's size to 100%/100%
the flash movie ends up being displayed at 0px/0px.

var startflash = new Swiff('index.swf', {
    id: 'startflash',
    width: '100%',
    height: '100%',
        container: $('startflash'),...

I have also tested it with Chrome&Opera and it works flawlessly.
Any idea what I am doing wrong?

Thanks in advance

Bob