轮播脚本中的Jquery函数定义

$(document).ready(function() {

//rotation speed and timer
var speed = 5000;
var run = seTinterval(rotate(),speed);   

//grab the width and calculate left value
var item_width = $('#slides li').outerWidth(); 
var left_value = item_width * (-1); 

//move the last item before first item,just in case user click prev button
$('#slides li:first').before($('#slides li:last'));

//set the default item to the correct position 
$('#slides ul').css({'left' : left_value});

//if user clicked on next button
function rotate() {
    //get the right position
        var left_indent = parseInt($('#slides ul').css('left')) - item_width;

        //slide the item
        $('#slides ul').animate({'left' : left_indent},3000,function () {

            //move the first item and put it as last item
            $('#slides li:last').after($('#slides li:first'));                  

            //set the default item to correct position
            $('#slides ul').css({'left' : left_value});

        });

        //cancel the link behavior
        return false;
}

});

但我在firebug中收到此javascript错误：

无用的seTinterval调用(参数周围缺少引号？)
[Interrompi per questo errore] var run = seTinterval(rotate(),speed);

我觉得这是旋转功能定义的错误！