Fixing input size issue in IE10

IE10 on Windows 8 doesn't get (from moxie) the width and height 100% inline properties that other browsers do, not sure why.
This causes the file selector not to open when clicking the majority of the button if you have a large button.
This fix adds the 100% properties inline by default.

No 100% width/height:
![Screen Shot 2013-03-04 at 17 41 32](https://f.cloud.github.com/assets/711132/217694/26be15ae-84f3-11e2-8765-9c28a00c9b58.png)

100% width/height:
![Screen Shot 2013-03-04 at 17 43 15](https://f.cloud.github.com/assets/711132/217695/26b74274-84f3-11e2-8e28-4de30f5f31f8.png)