html5

window.onload =function()
{
    var canvas = document.getElementById('myCanvas');
    var context = canvas.getContext('2d');
    context.beginPath();
    context.moveTo(20, 120);
     context.bezierCurveTo(50, 8, 300, 2, 250, 120);
    context.lineWidth = 10;
    context.strokeStyle = "#000";
    context.stroke();
};