This is the code:

<input type="file" name="uplo">

In Internet Explorer, it generates an input field plus a button. Clicking the button will allow you to select a file from your computer.
It is possible to put some style to the input-field like <input type="file" name="uplo" style='background-color: lime;'> but this only affects the generated inputfield, not the generated button.
The problem is that this type of <input> generates two input-elements on your page, but that you can only style the first element with css.
Anyone knows how to style the button (without using classes)?