| // Creates and iframe and appends it to the body element. Make sure the caller | |
| // has a body element! | |
| function createAdFrame() { | |
| let ad_frame = document.createElement('iframe'); | |
| document.body.appendChild(ad_frame); | |
| internals.setIsAdSubframe(ad_frame); | |
| return ad_frame; | |
| } |