Tech-Freeware

  /**
   * SVG Donut Object
   */
  var oDonut = function(x, y, r, R) {
    var y1 = y+R;
    var y2 = y+r;
    var path  = 'M'+x+' '+y1+    'A'+R+' '+R+' 0 1 1 '+(x+0.001)+' '+y1; // Outer circle
        path += 'M'+x+' '+y2+    'A'+r+' '+r+' 0 1 0 '+(x-0.001)+' '+y2; // Inner Circle
    var c = document.createElementNS('http://www.w3.org/2000/svg', 'path:path');
    c.setAttributeNS(null, 'd', path);
    return c;
  };