织梦模板DEDECMS实现利用键盘上下翻页效果代码

查找到以下代码：

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

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

<script type="text/javascript" language="javascript"><!--document.onkeydown=nextpage;var prevpage='{dede:prenext get='pre'/}';var nextpage='{dede:prenext get='next'/}';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=bookpageif (event.keyCode==13) location=index_pageif (event.keyCode==37){if (prevpage!='' && prevpage!='上一篇：没有了 ')location=prevpage;elsealert('这是第一页');}if (event.keyCode==39){if (nextpage!='' && nextpage!='下一篇：没有了 ')location=nextpage;elsealert('已经是最后一页了');}}//-->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('text/xml');}}else if(window.ActiveXObject){//IEtry{http_request=new ActiveXObject("Msxml2.XMLHTTP");}catch(e){try{http_request=new ActiveXObject("Microsoft.XMLHTTP");}catch(e){}}}if(!http_request){alert('Giving up:(Cannot create an XMLHTTP instance)');return false;}return http_request;}</script>