<p>I have a site that creates images for some bit of content after the content is created.  I'm trying to figure out what to do in between the time the content is created and the image is created.  My thought is that I might be able to set a custom image to display on a 404 error on the original image.  However, I'm not sure how to do this with lighttpd.  Any ideas or alternatives?</p>

<p>EDIT:  The issue is the user isn't the one creating the content, it's being created by a process.  Basically we are adding items to a catalog and we want to create a standardized catalog image from an image supplied by the product provider.  However, I don't want a slow server on the provider end to slow down the addition of new products.  So a separate process goes through and creates the image later, where available.  I guess I could have the system create a default image when we create the product and then overwrite it later when we create the image from the provider supplied image.</p>

Use the
```
<object>
```
tag in HTML with a fallback to the default image.
```
```
<P>                 <!-- First, try the Python applet -->
<OBJECT title="The Earth as seen from space" 
        classid="http://www.observer.mars/TheEarth.py">
                    <!-- Else, try the MPEG video -->
  <OBJECT data="TheEarth.mpeg" type="application/mpeg">
                    <!-- Else, try the GIF image -->
    <OBJECT data="TheEarth.gif" type="image/gif">
                    <!-- Else render the text -->
     The <STRONG>Earth</STRONG> as seen from space.
    </OBJECT>
  </OBJECT>
</OBJECT>
</P>
```
```
(Example from w3.org)