HTML: resizing a file input

The following code works in IE & resizes the file input element to be the width of the table cell containing it, can anyone tell me how I can modify this to work within netscape/mozilla please?

Code:

---

<TD Width="100%">
    <input type="file" id="test1" style="width:100%">
</TD>

---

AFAIK that's valid CSS - did you test it in the Gecko engine ?

Neo is right. Furthermore, you can't, and should not attempt to, change the size of form controls. It undermines accessibility and posses a security risk.

Mozilla refuses to style the file input control in any way. This is intentional.