Text indent is not working in ie7

Question

I am working on a website and on the top navigation bar there is a search box, I applied the following css on the search submit button

#submit {
   background:          


        

Answer 1

text-transform: capitalize; actually had no effect for me (it was happening on a tags), but this worked

text-indent: -9999px
float: left
display: block
font-size: 0
line-height: 0
overflow: hidden