cross browser issues, FF11, Chrome 18, Safari 5.1.5, IE 9

[Tim@DIM]

The above is what the menu should look like (Chrome)

The below images are how the menu is displaying in
Firefox (11),



Safari (5.1.5)



and IE 9



I know there are cross-browser solutions, but idk what they are.
Does anyone know how i can get the submenu to be the same position in all browsers? Length would be a nice to have the same as the parent menu but FF doesnt seem to like that.

Code available at mydomainsample.com/fire_rebuild

[sunfighter]

Go to http://validator.w3.org/ and valuate your code.
The first two errors are the most important and may correct your problem.
Lines 15 $ 16 S/B:
<link rel="stylesheet" href="stylesheets/coda-slider-2.0.css" />
<link rel="stylesheet" href="stylesheets/reset.css" />

and lines 40 & 41 need a type(see line 39)