Canvas:Draw rounded rectangle

gistfile1

function roundRect(ctx, x, y, width, height, radius, fill, stroke) {
				if (typeof stroke == "undefined" ) {
				stroke = true;
				}
				if (typeof radius === "undefined") {
				radius = 5;
				}
				ctx.beginPath();
				ctx.moveTo(x + radius, y);
				ctx.lineTo(x + width - radius, y);
				ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
				ctx.lineTo(x + width, y + height - radius);
				ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
				ctx.lineTo(x + radius, y + height);
				ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
				ctx.lineTo(x, y + radius);
				ctx.quadraticCurveTo(x, y, x + radius, y);
				ctx.closePath();
				if (stroke) {
				ctx.stroke();
				}
				if (fill) {
				ctx.fill();
				}        
}