Add icon to submit button in twitter bootstrap 2

Question

I want to use the twitter bootstrap icons on my form input submit buttons.

The examples on http://twitter.github.com/bootstrap/base-css.html#icons mainly show style

Answer 1

There is one way, how to get (bootstrap's) glyphicons into input type="submit". Using css3 multiple background.

HTML:

   …
   

and CSS:

.form-search input[type="submit"] {
    padding-left:16px; /* space for only one glyphicon */
    background:-moz-linear-gradient(top,#fff 0%,#eee 100%) no-repeat 16px top,
        url(../images/glyphicons-halflings.png) no-repeat -48px 0,
        -moz-linear-gradient(top,#fff 0%,#eee 100%); /* FF hack */
    /* another hacks here  */
    background:linear-gradient(to bottom,#fff 0%,#eee 100%) no-repeat 16px top,
        url(../images/glyphicons-halflings.png) no-repeat -48px 0,
        linear-gradient(to bottom,#fff 0%,#eee 100%); /* Standard way */
}

If multiple backgrounds are overlaping, at the top will be first background at the background: notation. So at the top is background which is indented 16px from left side (16px is width of single glyphicon), at the bottom level is whole glyphicons-halflings.png and at the bottom level (covers whole element) is same background gradient as at the top level.

-48px 0px is the cut for search icon (icon-search) but it's easy to show any other icon.

If someone need a :hover effect, background must be again typed at the same form.