mbuzz_content_height = $('.mbuzz_content:first').outerHeight(true);
mbuzz_curitem = '1';
$(window).load(function(){
    $('.mbuzz_logo').mouseover(function(){
        num = $(this).attr('name');
        v_op = '-=';
        if(num==mbuzz_curitem){
            return;
        }
        $('.mbuzz_logo_hover').removeClass('mbuzz_logo_hover');
        $(this).addClass('mbuzz_logo_hover');
        
        $('#mbuzz_content_container').stop(true).animate(
            {'top': -1*mbuzz_content_height*(num-1)}, 
            300, 'swing'
        );
        mbuzz_curitem = num;
    });
});