Canvas

<!DOCTYPE html>
<html><body>

<canvas id="canvas" width="512" height="512">
</canvas>

<script type="text/javascript">
var img = document.createElement("IMG");
img.onload = function() {
  var canvas = document.getElementById("canvas");
  var ctx    = canvas.getContext("2d");
  ctx.clearRect(
    0, 0, canvas.width, canvas.height);

  // 描画色などの設定
  ctx.strokeStyle = "rgb(255, 0, 0)";
  ctx.fillStyle   = "rgba(255, 0, 0, 0.5)";
  ctx.lineWidth   = 4;

  // 画像の描画
  ctx.drawImage(
    img, 512-img.width, 512-img.height);

  // 矩形の描画
  ctx.fillRect(4, 4, 256, 256);
  ctx.strokeRect(4, 4, 256, 256);

  // パスの描画
  ctx.beginPath();
  ctx.arc(200, 400, 100, 0, 1.5*Math.PI, false);
  ctx.lineTo(200, 400);
  ctx.closePath();
  ctx.fill();
  ctx.stroke();

  // テキストの描画
  ctx.fillStyle   = "black";
  ctx.strokeStyle = "white";
  ctx.lineWidth   = 1.5;
  ctx.font        = "bold 40px sans-serif";
  ctx.fillText("DevFest 2010", 120, 100);
  ctx.strokeText("DevFest 2010", 120, 100);
}
img.src = "../images/sample_photo.jpg";
</script>
</body></html>