This is an example form intended to demonstrate the security issues involved with opacity
applying to file upload controls. This technique has been based on, and modified slightly from the
demonstration by
Peter-Paul Koch.
This form will submit to the W3C Markup Validator. No file that you enter will be stored anywhere on my system, but I recommend you only provide the path of a simple HTML file of your choice, just to prove that this will actually upload the file.
This example is identical to example 1, except that the file upload control has been made semi transparent so it can be clearly seen how this technique works.