firefox 1.5 and background position

[charrup1973]

body { background-image: url(images/bg_dyno.gif);
background-position: bottom;
background-repeat: no-repeat;

This works fine in IE and was working in an older version of firefox but the latest version sends this image to the top of the page behind the head navigation system.

So how can i fix this now?

[Fang]

In standards mode the html is the canvas:html {
height:100%;
background: bla

[charrup1973]

Thank you, works perfectly.