function copyToClipboard(txt) {
    if(window.clipboardData) { 
        window.clipboardData.clearData();
        window.clipboardData.setData("Text", txt);
        alert("复制成功")
    } else if(navigator.userAgent.indexOf("Opera") != -1) {
        window.location = txt;
    } else if (window.netscape){
        try {
            netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
        } catch (e) {
            alert("被浏览器拒绝！\n请在浏览器地址栏输入'about:config'并回车\n然后将'signed.applets.codebase_principal_support'设置为'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);
        alert("复制成功")
    }
}


function addBookmark(url, label){
    try{
        if (document.all){
            window.external.addFavorite(url, label);
        }else if (window.sidebar){
            window.sidebar.addPanel(label, url, '');
        }
    }catch(e){}
}