[support] How can I add code that will call javascript within a block every minute for Drupal 6

[John Mitchell]

I have a block that contains javascript which calls a website that sends an
ad to this block (see below: Note: I changed the domain name to
adserveringwebsite). How can I add code that will call the below javascript
every minute so that a different ad will show up every minute instead of
just one ad at page load?
<SCRIPT type="text/javascript" LANGUAGE="javascript" src="
http://www.qksz.net/1e-kn60"> </SCRIPT>

Thanks,

John
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