Add image or text onto all JSP pages through Struts or CSS

I have a large number of JSP pages that need a small bit of static content added to them displayed in a fixed location. The content can appear over current page content. My question is, without making modifications to all 300 pages, is there a way to insert the content through Struts or CSS somehow?

For example, I want a logo to appear on all websites that I currently have, hovering at the bottom.

Note, I want to do this without making modifications to all 300 pages, and no, unfortunately the pages do not include menu header/footer files. I DO have a CSS page that is used though.

Solution

You might want to check out sitemesh. Read the documentation for the full installation and config details, but basically, for example, you could create a "master" decorator (think of a decorator like a skin, or template) like this:

<div id="header">Whatever you want here</div>
<div class="docBody"><decorator:body /></div>

Next add this snippet to your web.xml

<filter>
    <filter-name>sitemesh</filter-name>
    <filter-class>com.opensymphony.sitemesh.webapp.SiteMeshFilter</filter-class>
</filter>

<filter-mapping>
    <filter-name>sitemesh</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

and then sitmesh will intercept the request, and wrap the "master" decorator around the result from each jsp. In other words, the contents of each jsp will be rendered into <decorator:body>.