[ 0.0, 1.0, 0.0 ],

	[ 0.0, 1.0, 1.0 ],

	[ 0.0, 0.0, 1.0 ],

	[ 1.0, 0.0, 1.0 ],

	[ 1.0, 1.0, 0.0 ],

	[ 0.0, 0.0, 0.0 ]

];

function BranchRenderer(canvas_id, content_id) {

	this.canvas = document.getElementById(canvas_id);

	var t = document.getElementById(content_id);

	if (!document.createElement("canvas").getContext)

		this.canvas = window.G_vmlCanvasManager.initElement(this.canvas);

	this.ctx = this.canvas.getContext('2d');

	this.ctx.strokeStyle = 'rgb(0, 0, 0)';

	this.ctx.fillStyle = 'rgb(0, 0, 0)';

	this.cur = [0, 0];

	this.line_width = 2.0;

	this.dot_radius = 3.5;

	this.close_x = 1.5 * this.dot_radius;

	this.close_y = 0.5 * this.dot_radius;

	this.setColor = function(color, bg, fg) {

		var s = this.calcColor(color, bg, fg);

		this.ctx.strokeStyle = s;

		this.ctx.fillStyle = s;

	}

	this.render = function(data,canvasWidth) {

		var idx = 1;

		var rela = this.canvas;

		this.canvas.setAttribute('width',canvasWidth);

		var lineCount = 1;

		for (var i=0;i<data.length;i++) {

			var in_l = data[i][1];

			for (var j in in_l) {

				var m = in_l[j][0];

				if (m > lineCount)

					lineCount = m;

			}

		}

		var edge_pad = this.dot_radius + 2;