Ad Rotator?

[no mods]

How would I make it so after each refresh the ad I put changes? So like I have 4 different ads that show on one spot of the site, and each time a person refreshes they get a new ad.

[snakes1100]

<a href="https://vborg.vbsupport.ru/search.php?searchid=7491548" target="_blank">https://vborg.vbsupport.ru/searc...archid=7491548</a>

[no mods]

Thanks found something.