图片上左右箭头翻页js代码

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<script>function upNext(bigimg){var lefturl= '01.html';var righturl= '03.html';var imgurl= righturl;var width= bigimg.width;var height= bigimg.height;bigimg.onmousemove=function(){if(event.offsetX<width/2){bigimg.style.cursor= 'url(images/arr_left.cur),auto';imgurl= lefturl;}else{bigimg.style.cursor= 'url(images/arr_right.cur),auto';imgurl= righturl;}}bigimg.onmouseup=function(){top.location=imgurl;}}</script><img  src="images/02.jpg" /> 附件为：zuo'you