CSS Template messed up with browsers

Hello,
first, I'd like to congratulate for the great work with the templates that are being freely given on this website.

I'm trying to build up a website using one of the skins taken from your archive, the site is hosted on this link.
As you can see, using Firefox or IE7 as browser, many objects in the page get screwed, like the bottom links, or in the "Dove siamo" page images get over text, and many things aren't centered anymore.
The only way to see the page properly is using IE6.

Is there anything that i can do to have the page to not mess up using browsers like IE7 and Firefox?

Thanks in advance

Sincerely,
Dosphal



** edit **

i've been trying to look forward into the problem myself, and found that it can be fixed through css, but i know nearly nothing about it.. still i managed to fix one thing, that is the lower footer has no transparent spaces anymore since i fixed his width on the style.css.
Another problem i'd like to solve and which appears to be with a simple solution, (but hard for me), is to have the left and right image on the footer.
As you can see on the webpage i linked, on the lower nav-foot and the white footer on the background, they have their right image which i found in footer_g_r.gif, but they're lacking the left image.

on the style.css file, both left and right nav-foot are defined with the image

but only foot-nav .r is then defined

and foot-nav .l isn't written anywhere. So i've tried to add manually the foot-nav .l by copying the data of foot-nav .r but it isn't working.. most likely because i need to edit this line

padding: 9px 0 10px 0;

Anybody to tell me what are these values for? It's not really easy to find something specific in a guide




** edit 2 **
I managed to solve the lower footer problem myself.. if anybody using this template wants the fixes for the css code that i made up in 5 minutes just let me know

Now the problem is just the one in "Dove Siamo" page.. i'll be working on it but any suggestion would be really appreciated

** edit 3**
i solved the problem of the images going one over the other just by editing the footer height.. there was a footer which was almost invisible due to resizing and moving but now i made it work and it is ok for each page.. with different dimensions for each, not the same for each page like it was with css..
if anybody needs help with this template just PM me or send me an email