Image caching in when using javascript
<p>its common place to use javascript like in this exsample:</p>

<p>Example: <a href="http://www.htmlite.com/JS019.php" rel="nofollow">http://www.htmlite.com/JS019.php</a></p>

<p>My question is: Does the second image download each time or is it cached when the page first loads. If so how does the server know to cache the image?</p>
