What's going on here.

Yeah, I just recently continued work on this imageboard project of mine. It took a while to get my head back in the code but now it's going rather smoothly but I'm worried that the code is actually a trainwreck or is going to cause a server load that I could severely reduce if I knew what I was doing a little better.

I put in some silly things like templates for every aspect of the board (posts, replies, etc.) and made the code easier to read because my intention is to have some better-qualified people fix it up once it works.

Right now i'm wondering about the javascript involved when you click on a post number and have it appear in the comments box.