jQuery(document).ready(function(){

    $( ".container-frontpage div" ).bind( 'mouseover', function() {
        $( this ).children( 'ul' ).slideDown( 100 );
    } );
    
    $( ".container-frontpage div" ).bind( 'mouseleave', function() {
        $( this ).children( 'ul' ).slideUp( 100 );
    } );

});