How can I add code that will call the javascript within a block every minute? 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?

&lt;script src="http://www.adserveringwebsite.net/1e-kn99655"&gt;&lt;/script&gt;
You will need to use JavaScript's setTimeout() function:

To elaborate, place the code that calls your ad server inside a JS function.

Then, use setTimeout(), as demonstrated in the website I linked to, to call it at every x interval.