Banner - problem with firefox

Hi,

I've a problem with my banner (only in firefox, IE and chrome : OK)
I create a new position for my banner. In firefox, the banner is on the far left ...

You can see it here : www.fcliege-edj.be

Thank you for your help.

open layout.css and find this:

.header_menu {
float: left;
overflow: hidden;
padding-top: 10px;
text-align: right;
}

delete this: float: left;

It doesn't work ...
sorry to bother you again

It looks like you have not change it ? When I use fire bug's inspect element and select <div class="header_menu"></div>

it still shows this in right style panel:

.header_menu {
float: left;
overflow: hidden;
padding-top: 10px;
text-align: right;
}

so float:left; is still there.