index.html

/* USE CASE WHEN WE HAVE 2 ADS IN ONE PAGE */
<div class="ad1">
  <form data-dw="300" data-dh="90" data-dslid="300x60_1" data-tw="300" data-th="60" data-tslid="300x60_1" 
        data-mw="300" data-mh="60" data-nslid="300x600_1"></form>
</div>
<div class="ad2">
  <form data-dw="790" data-dh="90" data-dslid="790x90_1" data-tw="790" data-th="90" data-tslid="790x90_1" 
        data-mw="300" data-mh="60" data-nslid="300x60_2"></form> //important see 300x60_2 (_2 is ad position and is another the for other breakpoints)
</div>