improved barwidget

			var xpad = this.xPadding;

			var seriesBarDrawWidth =  parseInt(seriesBarWidth * (1 - this.gapSize));

			var seriesBarDrawWidth = Math.min(60,

			  parseInt(seriesBarWidth * (1 - this.gapSize)));

			if(parseInt(seriesBarWidth) == seriesBarDrawWidth){

				seriesBarDrawWidth -= 1;

			}

			var seriesBarDrawPadding = (seriesBarWidth - seriesBarDrawWidth) / 2;

			var nodes = graph.vis.selectAll("path")

				.data(series.stack)

				.enter().append("svg:rect")

				.attr("x", function(d) { return xpad + (d.x * seriesBarWidth) })

				.attr("x", function(d) { return xpad + (d.x * seriesBarWidth) + seriesBarDrawPadding })

				.attr("y", function(d) { return graph.y(d.y0 + d.y) })

				.attr("width", seriesBarDrawWidth)

				.attr("stroke", "#000")

				.attr("stroke-width", "1px")

				.attr("stroke-opacity", "0.6")

				.attr("height", function(d) { return graph.y.magnitude(d.y) });