ReferenceError: 'formdata' is not defined during file upload

[sanket]

Sorry for re-posting this issue. But its very urgent for me.

Hi, I am getting the following error while using file upload web script.
URL: http://localhost:8080/alfresco/service/sample/upload

org.mozilla.javascript.EcmaError: ReferenceError: "formdata" is not defined.

File: upload.post.js
Line: for each (field in formdata.fields)

I have tried to check on safari, IE and mozilla. Its not working.
Version i am using is Alfresco3.2

Is "formdata" available in this version ?
Or its some other problem ?

Please help.

[rogier_oudshoor]

Are you using a multi-part HTML form?

[sanket]

Yes..