jquery实现图片左右滚动效果

http://www.jqueryba.com/342.html
function scroll(box,left,right,img,speed,or)
{
  var box = $(box);
  var left = $(left);
  var right = $(right);
  var img = $(img).find('ul');
  var w = img.find('li').outerWidth(true);
  var s = speed;
  left.click(function()
   {
img.animate({'margin-left':-w},function()
  {
   img.find('li').eq(0).appendTo(img);
   img.css({'margin-left':0});
   });
});
  right.click(function()
   {
img.find('li:last').prependTo(img);
img.css({'margin-left':-w});
img.animate({'margin-left':0});
});
  if (or == true)
  {
   ad = setInterval(function() { right.click();},s*1000);
   box.hover(function(){clearInterval(ad);},function(){ad = setInterval(function() { right.click();},s*1000);});
  }
}
scroll(".mallMiddleBottom",".mallLeftImg",".mallRightImg",".mallUl",3,true);