filter for uploading files in brows button

[qadeer_ahmad]

filter for uploading files in brows button
Hi ,
i want to make a filter for uploading file in brows button as in my html form like this

<form method="post" name=f enctype="multipart/form-data"
onsubmit="return check();" action="loading.php"> <input type="file" name="userfile" size="40" <input type="hidden" name="MAX_FILE_SIZE" value="26214400" />
<input name="submit" type="submit" class="text6" value="Submit">
</form>

when i click on brows button when a brows window open and in this window at the end i see at bottom of this window

"files of type" here three type found here

All files
Picture(.gif,.jpg)
HTML (.htm,.html)

here i want to some changing ...
Can i make some changing here?
i want to only one format looking here like
CSV (*.csv)

Any Idea here?

[nemonoman]

The file browser is OS dependent. There is really no way to override the file-select file type manager from within PHP or HTML/javascript.