MULTIQUOTE button - Sprite CSS

[MaR?]

Im using Css sprites. And I have just one "button" not working. Is MULTQUOTE Button.

PHP Code:

<if condition="$show['multiquote_post']">
 
<a href="$post[replylink]" rel="nofollow" onclick="return false" class="multiquote spritebutton">
 
<img src="$stylevar[imgdir_button]/multiquote_<if condition="$show['multiquote_selected']">on<else />off</if>.gif" alt="$vbphrase[multi_quote_this_message]" border="0" id="mq_$post[postid]" />
</a> 


The class=?multicitar spritebutons? should work this way:

PHP Code:

.multiquote { 
background-position : 0 -640px; 
width : 82px; 
height : 23px; 
} 
.multiquote:hover { 
background-position : 0 -670px; 
} 


For the roll to work, I have to delete any tag <img?.> and put the class into tag <a ref?.>

The problem of MULTIQUOTE button is that it have 3 moment:

The normal
The hover
and when is PRESS (images/buttons/multiquote_on.gif) <--- This should NOT be CSS.

So, I want to know how to make this works.

Thanks!.