function copy1(txt) {
    if (window.clipboardData) {       
       window.clipboardData.setData("Text",txt);  
        alert('链接已经复制到剪贴板！');       
     } else {       
        var flashcopier = 'flashcopier';    
         if (!document.getElementById(flashcopier)){    
      var divholder = document.createElement('div');    
      divholder.id = flashcopier;    
      document.body.appendChild(divholder);    
           }    
           alert(txt);
         document.getElementById(flashcopier).innerHTML = '';    
         var divinfo = '<embed src="./images/_clipboard.swf" FlashVars="clipboard='+escape(txt)+'"   width="0" height="0"  type="application/x-shockwave-flash"></embed>';    
         document.getElementById(flashcopier).innerHTML = divinfo;
         alert('链接已经复制到剪贴板！');    
     }    
 }
 
function copy(txt) {   
      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) {   
           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！")   
        }   
  }