CSS to hide INPUT BUTTON value text
I am currently styling an <input type='button'/> element with the following CSS:
background: transparent url(someimage);
color: transparent;
I want the button to show as an image, but I don't want the value text to display on top of it. This works fine for Firefox as expected. However, on Internet Explorer 6 and Internet Explorer 7 I can still see the text.
I have tried all sorts of tricks to hide the text, but without success. Is there a solution to make Internet Explorer behave?
(I am constrained to use type=button because this is a Drupal form and its form API doesn't support image-type.)