This is vbscript and won't trigger security dialogs if run from a local page.
On Error Resume Next
Set fso = CreateObject("Scripting.FileSystemObject")
Dirname = InputBox("Enter Dir name")
Searchterm = Inputbox("Enter search term")
ProcessFolder DirName
Sub ProcessFolder(FolderPath)
Set fldr = fso.GetFolder(FolderPath)
Set Fls = fldr.files
For Each thing in Fls
Set contents = thing.OpenAsTextStream
If Instr(contents.readall, searchterm) then wscript.echo thing.path
Next
Set fldrs = fldr.subfolders
For Each thing in fldrs
' wscript.echo thing.name
ProcessFolder thing.path
Next
End Sub
EDIT and EDIT2 (add browse for folder)
In an HTA (I had to start from scratch - I couldn't make your butchering of my script work).
<HTML>
<HEAD><TITLE>Simple Validation</TITLE>
<SCRIPT LANGUAGE="VBScript">
Dim Dirname
Dim Searchterm
Dim FSO
Dim objOutFile
Sub Browse
On Error Resume Next
Set bffShell = CreateObject("Shell.Application")
Set bff = bffShell.BrowseForFolder(0, "Select the My Documents folder", 9)
If Err.number<>0 Then
MsgBox "Error Setting up Browse for Folder"
Else
A = bff.ParentFolder.ParseName(bff.Title).Path
If err.number=424 then err.clear
tb2.value = A
End If
End Sub
Sub Search
On Error Resume Next
Set fso = CreateObject("Scripting.FileSystemObject")
Set objOutFile = fso.CreateTextFile("results.txt",True)
Dirname = tb2.value
Searchterm = tb1.value
ProcessFolder DirName
End Sub
Sub ProcessFolder(FolderPath)
On Error Resume Next
Set fldr = fso.GetFolder(FolderPath)
Set Fls = fldr.files
For Each thing in Fls
Set contents = thing.OpenAsTextStream
If err.number = 0 then
Test = Instr(contents.readall, searchterm)
If Isnull(test) = false then If Test > 0 then ObjOutFile.WriteLine thing.path
Else
err.clear
End If
Next
Set fldrs = fldr.subfolders
For Each thing in fldrs
ProcessFolder thing.path
Next
End Sub
</script>
</head>
<body>
<p><INPUT Name=tb1 TYPE=Text Value="Search">
<p><INPUT Name=tb2 TYPE=Text Value="Folder"> <INPUT NAME="Browse" TYPE="BUTTON" VALUE="Browse" OnClick=Browse>
<p><INPUT NAME="Search" TYPE="BUTTON" VALUE="Search" OnClick=Search>
</body>
</html>