pomoc s <div>

prosím podívejte se sami na www.afteryou.hustej.net a poradte, jak rozlitane objekty <div> srovnat i ve FF
Zde je STYL layoutu:

#wrapper {
margin: 0 auto;
width: 922px;

}
#header {
color: #333;
width: 920px;
float: left;
padding: 0px;
border: 1px solid #ccc;
height: 110px;
margin: 10px 0px 5px 0px;
background: #E7DBD5;
}
#navigation {
float: left;
width: 920px;
color: #333;
padding: 0px;
border: 1px solid #ccc;
margin: 0px 0px 5px 0px;
background: #BD9C8C;
}
#leftcolumn {
color: #333;

background: white;
margin: 0px 5px 5px 0px;
padding: 5px;
height: 400px;
width: 195px;
float: left;
}
#rightcolumn {
float: right;
color: #333;
border: 1px dashed #ccc;
background: white;
margin: 0px 0px 5px 0px;
padding: 10px;
height: 350px;
width: 678px;
display: inline;
text-align:justify;
}
#footer {
width: 920px;
clear: both;
color: white;
border: 1px solid #ccc;
background: #BD9C8C;
margin: 0 auto;
padding: 0px;
height:20px;
background: url(obrazky/paticka.jpg) center center repeat;
font: bold 13px Arial;
text-align:center;


}


A HTML:

<div id="wrapper">


<div id="header">
</div>

<div id="navigation">
</div>



<div id="leftcolumn">
</div>

<div id="rightcolumn">
</div>

</div>

<div id="footer">
</div>