js 复制地址和标题给好友 兼容火狐ie

项目当中用到复制地址和标题给好友的功能，现将代码公布如下

<script type="text/javascript">
function copy_url(){
var clipBoardContent=""; 
clipBoardContent+=document.title; //获取标题 
clipBoardContent+="\n"; 
clipBoardContent+=this.location.href; //获取地址
if (window.clipboardData){
window.clipboardData.setData("Text", clipBoardContent);}
else if (window.netscape){
netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');
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=clipBoardContent;
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);}
alert("复制成功,您可以发送给你的好友啦!");
}
</script>
<a href="javascript:copy_url();">复制链接</a>