function circles()
{
	var canvas = document.getElementById('moncanvas')
	if (canvas.getContext)
	{
		var ctx = canvas.getContext('2d');

		ctx.beginPath();
		ctx.fillStyle="#f7488a";
		ctx.globalAlpha=0.15;
		ctx.arc(50,50,50,0, 2 * Math.PI,true);
		ctx.fill()

		ctx.beginPath();
		ctx.fillStyle="#f7488a";
		ctx.globalAlpha=0.30;
		ctx.arc(68, 64, 28.5, 0, 2 * Math.PI,true);
		ctx.fill()
	}
	else
	{
		// Le Canvas nÕest pas supportˇ
	}
}

circles();