$(document).ready(function(){   
    $("#main_col .slideshow").slides({
        play: 3000,
        generatePagination: false
    }).bind('slidechange', function() {
        var current = $(this).find('.pagination .current');
        var thumbTop = current.position().top;
        var paginationTop = $(this).find('.pagination').position().top
        if (thumbTop!==0 || paginationTop!==5) {
            $(this).find('.pagination').animate({
                'top': -thumbTop
                });
        }
    });
    
    $("#sidebar .slideshow").slides({
        play: 5000,
        generatePagination: true
    });
});