織夢DEDECMS怎么實現利用鍵盤上下翻頁效果

$this-&gt;PreNext['pre']?=?"上一篇：<a>{$preRow['title']}</a>?";

$this-&gt;PreNext['pre']?=?"$mlink?"; $this-&gt;PreNext['next']?=?"下一篇：<a>{$nextRow['title']}</a>?";

<script> <!-- document.onkeydown=nextpage; var prevpage=&#39;{dede:prenext get=&#39;pre&#39;/}&#39;; var nextpage=&#39;{dede:prenext get=&#39;next&#39;/}&#39;; var index_page = "index.html"; //var bookpage="index.html"; function nextpage(event) { event = event ? event : (window.event ? window.event : null); //if (event.keyCode==13) location=bookpage if (event.keyCode==13) location=index_page if (event.keyCode==37) { if (prevpage!=&#39;&#39; && prevpage!=&#39;上一篇：沒有了 &#39;) location=prevpage; else alert(&#39;這是第一頁&#39;); } if (event.keyCode==39) { if (nextpage!=&#39;&#39; && nextpage!=&#39;下一篇：沒有了 &#39;) location=nextpage; else alert(&#39;已經是最后一頁了&#39;); } } //--> function getElement(aID) { return (document.getElementById) ? document.getElementById(aID): document.all[aID]; } function makeRequest(url){ http_request=false; if(window.XMLHttpRequest){//Mozilla,Safari,... http_request=new XMLHttpRequest(); if(http_request.overrideMimeType){ http_request.overrideMimeType(&#39;text/xml&#39;); } }else if(window.ActiveXObject){//IE try{ http_request=new ActiveXObject("Msxml2.XMLHTTP"); }catch(e){ try{ http_request=new ActiveXObject("Microsoft.XMLHTTP"); }catch(e){} } } if(!http_request){ alert(&#39;Giving up:(Cannot create an XMLHTTP instance)&#39;); return false; } return http_request; } </script>