JIT Node Extension: Advanced Rectangle with rounded borders

gistfile1.js

/**
 * JIT Advanced Rectangle
 * 
 * Usage
 * =====
 * 
 * Node: {
 *	overridable: true,
 *	type: "adv-rect",
 *	CanvasStyles: {
 * 		fillStyle: "#F1F4F7", // background color
 *		strokeStyle: "#CCC",  // border color
 *		lineWidth: 0.5,
 *		radius: 4
 *	}
 * },
 * 
 * @author Thomas Gossmann <http://gos.si>
 */
$jit.ST.Plot.NodeTypes.implement({  
	'adv-rect': {  
		'render': function(node, canvas) {  
			var width = node.getData('width'),  
				height = node.getData('height'),  
				pos = this.getAlignedPos(node.pos.getc(true), width, height),  
				posX = pos.x + width/2,
				posY = pos.y + height/2,
				radius = node.getCanvasStyle("radius"),
				RoundRect = {
					'render': function(type, pos, width, height, radius, canvas) {
						var ctx = canvas.getCtx(),
							x = pos.x - width/2,
							y = pos.y - height/2;
	
						ctx.beginPath();  
						ctx.moveTo(x,y+radius);  
						ctx.lineTo(x,y+height-radius);  
						ctx.quadraticCurveTo(x,y+height,x+radius,y+height);  
						ctx.lineTo(x+width-radius,y+height);  
						ctx.quadraticCurveTo(x+width,y+height,x+width,y+height-radius);  
						ctx.lineTo(x+width,y+radius);  
						ctx.quadraticCurveTo(x+width,y,x+width-radius,y);  
						ctx.lineTo(x+radius,y);  
						ctx.quadraticCurveTo(x,y,x,y+radius);  
						ctx[type]();
					}	
				};

			if (radius > 0) {
				RoundRect.render('fill', {x: posX, y: posY}, width, height, radius, canvas);
				RoundRect.render('stroke', {x: posX, y: posY}, width, height, radius, canvas);
			} else {
				this.nodeHelper.rectangle.render('fill', {x: posX, y: posY}, width, height, canvas);  
				this.nodeHelper.rectangle.render('stroke', {x: posX, y: posY}, width, height, canvas);
			}  
		},
		'contains': function(node, pos) {
			var width = node.getData('width') - (node.getCanvasStyle("lineWidth") ? node.getCanvasStyle("lineWidth") : 0),
				height = node.getData('height') - (node.getCanvasStyle("lineWidth") ? node.getCanvasStyle("lineWidth") : 0),
				npos = this.getAlignedPos(node.pos.getc(true), width, height);
			return this.nodeHelper.rectangle.contains({x:npos.x+width/2, y:npos.y+height/2}, pos, width, height);
		}
	}
});

Hi,
Can you please license this code of yours?
Thanks.