在JavaScript中如何解决用execCommand(

 function CmdSave() {  var OW = window.open('', "_blank", "");  var DD = new Date();  OW.document.open();  var content = document.getElementById("content").innerHTML;  OW.document.write(content);  var name = mineName + "-" + $("#selDate").val() + ".htm";  OW.document.execCommand("saveAs", false, name);//执行保存，IE6,IE7,IE8有效  OW.close(); }

 function CmdSave() {  var css = "<style type='text/css'>.trNormalTd { border-top-width: 0px; border-bottom-width: 0px;text-align:right;}.trLastTd {border-top-width: 0px;text-align:right;}.trFirstTd{border-bottom-width: 0px;text-align: right;}</style>";  var html = document.getElementById("content").innerHTML;  var content = css + html;  var name = mineName + "-" + $("#selDate").val() + ".htm";  savePage(content, name);} //content 内容 fileName 文件名 先在服务器生成页面，然后再下载生成的页面 function savePage(content, fileName) {  $.ajax({   type: 'post',   dataType: 'text',   url: 'FXBB/BCYM',   data: {    content: content,    fileName: fileName   },   success: function (result) {    var url = "YXGZ/DBFX/BBCX/FXBB/XZYM?fileName=" + fileName;    var downloadUrl = window.location.protocol + "//" + window.location.host + "/" + url;    window.open(downloadUrl);//下载页面    //deleteFile(fileName);   },   error: function (msg) {    alert("保存出错");   }  }); }  //保存页面  public int BCYM(string content, string fileName)  {   string path = System.AppDomain.CurrentDomain.BaseDirectory;   path = Path.Combine(path, @"Upload/FXBB");   //清空保存文件文件夹文件   foreach (string d in Directory.GetFileSystemEntries(path))   {    if (File.Exists(d))    {     File.Delete(d);    }   }   //生成要保存的页面   path = System.AppDomain.CurrentDomain.BaseDirectory;   path = Path.Combine(path, "Upload/FXBB/" + fileName);   using (StreamWriter sw = new StreamWriter(path, false, Encoding.UTF8))// File.AppendText(path))   {    sw.WriteLine(content);    sw.Flush();   }   return 1;  }//下载页面  public void XZYM(string fileName)  {   string path = System.AppDomain.CurrentDomain.BaseDirectory;   path = Path.Combine(path, @"Upload/FXBB/" + fileName);   string filePath = path;//Server.MapPath("DownLoad/aaa.zip");//路径   //以字符流的形式下载文件   FileStream fs = new FileStream(filePath, FileMode.Open);   byte[] bytes = new byte[(int)fs.Length];   fs.Read(bytes, 0, bytes.Length);   fs.Close();   System.Web.HttpContext.Current.Response.ContentType = "application/octet-stream";   //通知浏览器下载文件而不是打开   System.Web.HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));   System.Web.HttpContext.Current.Response.WriteFile(filePath);  }