有没有办法使用jQuery keydown移动图像而无需浏览器上下滚动？

I'm trying to move an image that is in the middle of a long webpage using jQuery keydown and animate. However, every time I press the up and down key, the browser also scrolls up and down. Is there a way to make the browser static as I move only my image? Thanks!I'm trying to move an image that is in the midd