Your links are not coming up at the moment so I cannot say anything about your specific layout and style.
However, to answer your original question in a general way, yes. There is a way to change banners with a single change to a css stylesheet, if the banner can be the background image to a division:
Code:
div#banner {
width:250px; /*set to width of banner*/
height:100px; /*set to banner height*/
background-image:url('path/filename.jpg');
}
Then you can have a division on each page:
HTML Code:
<div id="banner"></div>
and it will show the banner configured in the style section. If you need a linked banner and the link would change along with the image used, then you will probably be best off using a server side include. Javascript could do this too but is less reliable as, not everyone has javascript enabled. If javascript is used, a default banner could be made available to those folks surfing without javascript.
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