hello world example
window.onload = function() {
uuCanvas.ready(function() {
var ctx = document.getElementById("canvas").getContext("2d");
ctx.textBaseline = "top";
ctx.font = "32pt Arial";
ctx.fillStyle = "black";
ctx.shadowOffsetX = 10;
ctx.shadowOffsetY = 10;
ctx.shadowColor = "gray";
ctx.shadowBlur = 5;
ctx.fillText("YES", 0, 0);
ctx.fillText("WE", 0, 40);
ctx.fillText("CANVAS!", 0, 80);
});
}