今天在給blog添加代碼著色的功能的時候發現SyntaxHighlighter項目中使用的復制代碼功能的腳本如果瀏覽器不是IE的話是使用的一個flash實現的，而且還要在HighlightAll調用之前先寫一句dp.SyntaxHighlighter.ClipboardSwf = 'xxxxxx'，太麻煩了，google了一下發現也有純javascript實現拷貝的方法。

function copyCode(id) {
 var txt=document.getElementById(id).innerText;
 if(window.clipboardData){  
  window.clipboardData.clearData();  
  window.clipboardData.setData("Text", txt);
 }  
 else if(navigator.userAgent.indexOf("Opera") != -1){  
  window.location = txt;  
 }  
 else if (window.netscape){ 
  txt=document.getElementById(id).textContent;
  try {  
   netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");  
  }  
  catch (e){  
   alert("!!被瀏覽器拒絕！\n請在瀏覽器地址欄輸入’about:config’并回車\n然后將’signed.applets.codebase_principal_support’設置為’true’");  
  }  
  var clip = Components.classes["@mozilla.org/widget/clipboard;1"].createInstance(Components.interfaces.nsIClipboard);  
  if (!clip) return;  
  var trans = Components.classes["@mozilla.org/widget/transferable;1"].createInstance(Components.interfaces.nsITransferable);  
  if (!trans) return;  
  trans.addDataFlavor("text/unicode");  
  var str = new Object();  
  var len = new Object();  
  var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);  
  var copytext = txt;  
  str.data = copytext;  
  trans.setTransferData("text/unicode",str,copytext.length*2);  
  var clipid = Components.interfaces.nsIClipboard;  
  if (!clip) return false;  
  clip.setData(trans,null,clipid.kGlobalClipboard);  
 }
 window.status="代碼已被復制到剪貼板!Contents have copied to clipboard!"
 setTimeout("window.status=''",3600)
 return true;  
}