键盘上一张下一张兼容IE/google/firefox等浏览器

　　< script language = "javascript" >

　　document.onkeydown = chang_page;

　　function chang_page(event) {

　　var event = event ? event : (window.event ? window.event : null);

　　var key = event.keyCode || event.which;

　　if (key == 37 || key == 33)

　　location = '';

　　if (key == 39 || key == 34)

　　location = '';

　　}

　　< / script >