Jquery :: Fading Images For Non List Items?

I followed a tutorial in .net magazine (a UK web design mag) on how to fade images using jQuery. I have followed it and I can now fade images for my menu, problem is, I am not sure how to append the code to all my to fade images for non list items. For example, I have a call to action button (just a telephone number with a graphic, I have used css sprites to add a hover to the graphic, but would now like to fade it using jquery. Still not managed to get this working, here is what I for my menu, which fades the images perfectly.

html:
Code:
<div id="navigation_primary">
<ul>
<li class="home hover"><a href="home">Home</a></li>
<li class="services hover"><a href="services">Services</a></li>
<li class="work hover"><a href="work">Work</a></li>
<!--<li class="blog hover"><a href="blog">Blog</a></li>-->
<li class="contact hover"><a href="contact">Contact</a></li>
</ul>
</div>

Here is my jQuery:
Code:
$(document).ready(function() {
navigationPrimary();
});

function navigationPrimary() {
$('#navigation_primary li').removeClass('hover');
$('#navigation_primary li a')
.css({ opacity: 1.0 })
.mouseover(function() {
$(this).stop().animate(
{ opacity: 0.0 }
, 300);
}) .....