Compo – I’m in. First time alone :-(

Hi everyone!

First time in the compo and the graphic is going to be laughable. I’m very lucky that this year Minimalism won, so I have an excuse to be “minimal” in the art!

So, I’m going to make a multiplayer game in HTML5, or better, I will use DART and compile it in JavaScript.
This is my first HTML5 game I’m going to made, so… I have a question.

How do you disable default browser functions?
I have a canvas, but if I double click on it, chrome will select the page. If I click spacebar chrome will go on the bottom. Any idea? Thank you =D