Problem with File uploading from popup

[Durga Krishna]

Hi Guys,

I was strucked with one problem in my application.
My problem is,I have a button with name 'AddFile' in my porlet.
When i click on the button, a pop up will be opened.
From that popup window, i will choose a file(using <input type = "file" name="file" > form local drive, and i will click on 'file upload' button.I am using spring's MultipartHttpServletRequest in my controller.When i click on 'file upload' button, the whole page(not the popup) is getting refreshed.File is not uploading...but...After that i removed my popup,and i added the whole popup form in the portlet(by taking a div in my porlet) itself(now popup content is in the portlet).. and i opened firefox..then i clicked on 'file upload' button..now the file is getting uploaded.the same is not working in IE.

I was totally confused, and was strucked since 2 weeks.

Can any one solve my problem.

Thanks in advance.