dedecms编辑器中增加代码运行框

<script language="javascript" type="text/javascript">function copycode(obj) {var rng = document.body.createTextRange();var obj1=document.getElementById(obj)rng.moveToElementText(obj1);rng.scrollIntoView();rng.select();rng.execCommand("Copy");rng.collapse(false);}function runCode(obj) {var winname = window.open('', "_blank", '');var obj1=document.getElementById(obj)winname.document.open('text/html', 'replace');winname.opener = null // 防止恶意修改winname.document.writeln(obj1.value);winname.document.close();}function saveCode(obj) {var winname = window.open('', '_blank', 'top=10000');var obj1=document.getElementById(obj)winname.document.open('text/html', 'replace');winname.document.writeln(obj1.value);winname.document.execCommand('saveas','','现代视觉创意联盟.htm');winname.close();}</script><textarea cols="80" rows="20" name="code" class="code_texear"></textarea><div class="editbox"><input class="code_input" onclick="runCode('code')" type="button" value="运行代码" /> <input class="code_input" onclick="copycode('code')" type="button" value="复制代码" /> <input class="code_input" onclick="saveCode('code')" type="button" value="另存代码" /> <b>提示：您可以先修改部分代码再运行或者直接保存</b> </div></div>