Thread:Prajay/@comment-8951121-20130610123747/@comment-5694283-20130610235319

That black box is a Template coded in HTML. Type  anywhere to make that black box popup. And that Youtube code will appear once you type Prajay. And the code for both these are stored at here and mediawiki:prajay respectively. Note : I had to take help from Jens Ingels for that YouTube part since that code would not work when pasted into an template or a page. Use Google for the YouTube code.

How it appears on a page when the codes for each are pasted :
Prajay