function copy_clip(copy){
	if (window.clipboardData){
	window.clipboardData.setData("Text", copy);}
	else if (window.netscape){
	try { 
				netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); 
			} 
			catch (e) 
			{ 
				alert("被浏览器拒绝！\n请手工复制RSS网址。"); 
			} 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=copy;
	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("已成功复制"+copy+"到剪贴板!")
	return false;
}