Banner change on hover...Background change

How can I have my banner change when someone hovers over it. My forum is phpbb2.

Also I had one other question, Is it possible so my background image would change depending on time of day. Could someone generate this code? Maybe so it's not so complicated, have it so it changes every couple seconds. (Fades from each image every 20 seconds or so.)
There are lots of forums that do this. One is Bell Tree Forums I guess Forumotion kinda does it too, with there 'pick your theme widget'... ------->

Each question is would appreciate an answer, but not so much the second one....

Position your logo in center in AP, Headers and navigation.
Add a class to your logo in overall_header:
Find this and add underlined.

<!-- BEGIN switch_logo_center -->
<a href="{U_INDEX}"><span class="logo"><img src="{LOGO}" id="i_logo" border="0" alt="{L_INDEX}" vspace="1" /></span></a>

Add both banners through CSS

Code:

.logo {
    background-image: url('STATIC BANER LINK HERE');
    height: XYpx;
    width: XYpx;
}
.logo:hover {
    background-image: url('PUT YOUR HOVER LINK HERE');
    height: XYpx;
    width: XYpx;
}

Replace links and XYpx.

or
......
Add both banners through CSS

Code:

table.bodylinewidth img#i_logo {
background-image : url(PUT YOUR HOVER LINK HERE);
border:1px dashed #FF6633;
}

Good luck

neither worked....

this thread should help you

http://www.dynamicdrive.com/forums/archive/index.php/t-4208.html

Did you publish your template Suki?
Wouldn't told you if I haven't tried it.

Actually, sorry I should have been more specific Nera, I didn't find the part you gave me in my templates.