problema con IE6

[dearste]

Ciao a tutti,
ho un problemino con Ie6 , ecco il codice css:

<style type="text/css">
body, .body{ background-color:#EBEBEB; height:100%; font-family:"Trebuchet MS";}
#left{float:left; width:200px; background-color:#F7F7F7; min-width:150px; max-width:300px; border:solid #ACACAC 1px;}
#v-slide{float:left; cursor:w-resize; width:7px;}
#right{float:none;  margin-left:207px; margin-right:180px;}
#fullmsg{background-color:#F7F7F7; overflow:auto;border:solid #ACACAC 1px;}
#top{height:300px; overflow-x:hidden; background-color:#F7F7F7; overflow:auto; min-height:100px; max-height:400px; border:solid #ACACAC 1px;}
#h-slide{height:7px; cursor:n-resize}
#bottom{position:relative; height:450px; background-color:#F7F7F7; overflow:auto; min-height:100px; max-height:500px; border:solid #ACACAC 1px; padding:5px;}
#cont {
min-width:850px;
width: 100%;
height:100%;
}
.header{padding: 0 0 7px 0; height:50px}
</style> 

ecco Html:

<div id="cont">
<div class="header"></div>
<div class="body">
<div id="left" ></div>
<div id="v-slide "></div>
<div id="right">
<div id="container" >
<div id="top"></div>
<div id="h-slide"></div>
<div id="bottom"></div>
<div style="clear:both"></div>
</div>
</div>
<div style="clear:both"></div>
</div>
<div style="clear:both"></div>
</div> 

In firefox viene visualissato perfettamente, ma in IE il div #right viene spostato sotto il #left..
Qualche suggerimento?
grazie.