I've trying to get You Tube videos that are embedded to my ebay listings to work via ebay mobile app.

To do so, I need to use iframes, however ebay doesn't allow iframes, but there are workarounds such as this....


I've not used javascript before, so I have no idea how to implement it within html? When I try to include it, instead of the iframe content appearing, the reassembled iframe code appears instead like this....


Any ideas where I am going wrong please, or another way I can use iframe suitable for video use in ebay?

Thank you