//JS复制代码(IE/FF)
function copy_clip(meintext)
{

 if (window.clipboardData)
   {
   window.clipboardData.setData("Text", meintext);
   }
   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=meintext;
  
   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！');
   return false;
}

//字符长度
function strlen(str)
{
	var len;
	var i;
	len = 0;
	for (i=0;i<str.length;i++)
	{
		if (str.charCodeAt(i)>255) 
			len+=2; 
		else 
			len++;
	}
	return len;
}