Content-Div rutscht unter Sidebar im IE6

/*************************************
           Containers
 *************************************/
body {
    font: 13px Arial, Helvetica, sans-serif; 
    background:#333;
    color:#333;
    text-align:right;
    margin:15px auto 0px auto;
    border:2px #fff solid;
    width:750px;
}
#fenster{
    margin:0 auto 0 auto;
    text-align:left;
    width:750px;
    background:#c8f285;
}
#header{
    padding:0px 0px;
    background:#c8f285;
}
#sidebar{
    font-size:1.1em;
    float:left;
    padding:20px 12px 0 0;
    width:160px;
    border-right:2px solid #88b442;
    margin:0px 0px 0px 10px;
    display:block;
    background:#c8f285;
}
#content{
    font-size:14px;
    float:right;
    padding:0;
    width:461px;
    margin:13px 85px 20px 20px;
    background:#c8f285;
}
#footer{
    background:#c8f285;
    color:#333;
    clear:both;
    font-size:0.9em;
    text-align:center;
    margin:10px 0 0 0;
    padding:3px 0 7px 0;
    border-top:1px solid #FFF;
}

<?php get_header(); ?>
<?php get_sidebar(); ?>


 <div id="content">
    <?php if (have_posts()) : while (have_posts()) : the_post(); ?>
        <div class="entrytitle"><h1></h1></div>
            <div class="pagebody" style="line-height: 20px; font-size:14px">
                <?php the_content('<span class="readmore">Ganzen Eintrag lesen &raquo;</span>'); ?>
            </div>
 </div>


          <?php endwhile; endif; ?>
<?php get_footer(); ?>