There is an explanation of how to do this (or similar) here
Basically create the link and give your href
an id. Then create the css code (save this is your custom.css
file), and apply this css classto your divs 'Module Class Suffix'.
I think this should work?!
Eample code;
HTML
<div id="site">
<div id="full-width-header">
<a href="/" id="home-link">Home</a>
<div id="header-content">We love using Joomla!</div>
</div>
<div id="body-content">OSM saves the world!</div>
<div id="footer-content">(c) the really cool web-designer</div>
</div>
CSS
#full-width-header {
position: relative; /* necassary to
absolute-position the child-element
#home-link relative to the header */
background: url(header-logo.jpg);
width: 800px;
height: 172px;
}
#home-link {
position: absolute;
display: inline-block;
width: 200px; /* width of the logo */
height: 172px; /* height of the logo */
top: 0; left: 0; /* top-left corner of logo */
border: 0;
float: left;
visibility: hidden;
}
#header-content {
position: relative;
float: right;
width: 400px;
height: 172px;
vertical-align: bottom;
text-align: right;
}
Hope it helps.