API paging

Hello,
I’ve created a page which pulls 28 videos from Youtube from a specific account. I’ve also added a form and text box which lets me filter the results in real time like that used in your Gallery example. What I would like to do is offer some kind of paging or even a load more option similar to the DMXzone video area.

I’ve tried adding the value of the nextpagetoken to a form button it’s not doing anything. I think I am close but cannot quite get it right - yet. Any advice appreciated.

Thanks,
Brian