sub Get_File_Name{
    if($ENV{HTTP_USER_AGENT} =~ /win/i){ 
        fileparse_set_fstype("MSWin32");  #changed from MSDOS to try and fix the A:\ problem
    } 
    elsif($ENV{HTTP_USER_AGENT} =~ /mac/i) {
        fileparse_set_fstype("MacOS");
    }
    my $full_name =  shift;
    $full_name    =  basename($full_name);
    $full_name    =~ s!\s!\_!g;          # Replace whitespace with _
    return($full_name);
}