a quick javascript lightbox

I had to develop some feature which required some javascript lightbox,
I really not needed a fancy one, but a small or medium one
it was for some small confirmation and in addition a couple of inputs on confirmation
so you can imagine a small html form being poped up
I had to add one then, and I guessed tomorrow there might be couple of more coming

I found very nice options when googled
but I thought of implementing one of my own just for fun, and I got this a quick one

  html: "my html goes here"
  title: "my title"
  alert "Am done"

hi there

And it really took a very less time to build this one as follows

The most interesting part here is to be able to define callbacks like done and cancel.

And I welcome all suggestions :)