The Income Tax E-filling Website is currently working properly. You might be getting the problem due to connectivity or temporery service problem. Better You should try after some time.
U might be facing problem due to temp. server problem so please try after sometime. If still problem persist please follow the below instructions : (For Internet explorer 8 or 9)
Open the internet explorer -> go to tools -> select internet optons -> select securities -> custome level -> Include local directory path when uploading files to a server (Select Enable)