Ovidio thank you for your consideration. In fact, I have not given much attention to the results grid because the goal of my work was to create a control for uploading multiple files. In addition, the visual aspect is only demonstration. The essential css rules are on the top of multiuploads.css (before /* CUSTOMIZATION */ comment). However, I am preparing a packed .w2p web2py small application as required by Bruno. Maybe, there you will see something nicer.
Ciao. Paolo