Is there a property to allow a custom Cancel All button?  I'm able to customized the Upload and Cancel buttons, but I did not see any documentation for Cancel All other than changing the text on the button.  Additionally, I am using a single file uploader.  If the user uploads two files in a row, then the Cancel All button still appears even though the uploader is only uploading a single file.  Is there anyway to hide the Cancel All button from displaying?