[Javascript] Refresh an image, change an image

[Tim Makins]

1st question:


<meta HTTP-EQUIV="Refresh" content="240">

I am familiar with the above instruction that will refresh my page's entire
contents every 240 seconds.

but what I am wondering is this: Is it possible to refresh JUST one image on
the page, such as the one below...

<div id="live_image">
<img src="http://www.company.com/images/live_image.gif" width="741"
height="631" alt="" name="itsalive">
</div>


My reason for asking is that the page has quite a few other images, but none
of them need refreshing. Loading them all again would slow things down, and
is really un-necessary.

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2nd question

Assuming I want to change the above image on the page for a new one on my
server, (not previously downloaded), such as
http://www.company.com/images/live_image2.gif what would be the code for a
form-button that would do that ?


Note that pre-loading both images isn't an option as they are generated on
the server.

Tim in Ireland.