Mine

if ( function_exists('register_sidebar') )
     register_sidebar(array(
        'name' => 'bottom',
        'id'   => 'footersidebar',
        'before_widget' => '<div class="footerfloatleft">',
        'after_widget' => '</div>',
        'before_title' => '<li><h2>',
        'after_title' => '</h2></li><li>',
    ));


sidebar called with:

<?php if (  !dynamic_sidebar('bottom') ) : ?>footer sidebar<?php endif; ?>