Авто прокрутка слайда

$(document).ready(function(){
    /* This code is executed after the DOM has been completely loaded */
    
    var totWidth=0;
    var positions = new Array();
    
    $('#slides .slide').each(function(i){
        
        /* Traverse through all the slides and store their accumulative widths in totWidth */
        
        positions[i]= totWidth;
        totWidth += $(this).width();
        
        /* The positions array contains each slide's commulutative offset from the left part of the container */
        
        if(!$(this).width())
        {
            alert("Please, fill in width & height for all your images!");
            return false;
        }
        
    });
    
    $('#slides').width(totWidth);
 
    /* Change the cotnainer div's width to the exact width of all the slides combined */
 
    $('#menu ul li a').click(function(e){
 
            /* On a thumbnail click */
 
            $('li.menuItem').removeClass('act').addClass('inact');
            $(this).parent().addClass('act');
            
            var pos = $(this).parent().prevAll('.menuItem').length;
            
            $('#slides').stop().animate({marginLeft:-positions[pos]+'px'},450);
            /* Start the sliding animation */
            
            e.preventDefault();
            /* Prevent the default action of the link */
    });
    
    $('#menu ul li.menuItem:first').addClass('act').siblings().addClass('inact');
    /* On page load, mark the first thumbnail as active */
    
});

setInterval(function(){ $(".....").trigger('click');},2000);