anchor.diff:        .chart rect:hover {
             fill: #000;
         }
  +      .yTicks {
  +        stroke: #aaa;
  +        stroke-width: 0.5;
  +      }
   
       script
           $(document).ready(function(){
               // d3.js Graph
               var xlab = 30;
  +            var chartw = 940;
               var w = 5.595;
               var h = 120;
   
  
positive.code:                 .attr("width", w * #{chanFreqLen} - 1)
                  .attr("height", h + xlab);
  
              chart.selectAll("rect")
                  .data([#{chanFreq}])
                .enter().append("rect")
  
negative.code:                 .attr("width", w)
                  .attr("height", function(d) { return y(d); })
                  .attr("title", function(d){ return d; });
  
              chart.selectAll(".rule")
                .data(y.ticks(5).slice(1,5))
                .enter().append("text")
                .attr("class", "rule")
                .attr("y", function(d) { return -1 * y(d) + h; })
                .attr("x", (chartw / 2)+(w/2))
                .attr("text-anchor", "middle")
                .attr("font-size", 10)
                .attr("dy", 3)
                .text(String);
  
              chart.append("line")
                .attr("x1", 0)
  