복사된 JS 함수

IE 및 Firefox 공통 클립보드로 복사되는 JS 함수
인터넷에서 찾은 것을 조금 고쳤다

 function copyToClipboard(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(" ！
 'about:config' 
 'signed.applets.codebase_principal_support' 'true', Ctrl+C ！");   
             }   
             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(" ！");
   }