l";
var index_page = "index.html";
function jumppage() {
var event = document.all ? window.event : arguments[0];
if (event.keycode==37) location=preview_page;
if (event.keycode==13) location=index_page;
if (event.keycode==39) location=next_page;
}
document.onkeydown=jumppage;
-->
本章已完成！