 
     bubble.append("circle")
       .attr("class", "rin")
-      .attr("opacity", 0.5)
+      #.attr("opacity", 0.5)
       #.attr("fill", "#f00")
 
     bubble.append("circle")
       .attr("class", "rout")
-      .attr("opacity", 0.5)
+      #.attr("opacity", 0.5)
       #.attr("fill", "#00f")
 
 

bubblesChartWidth = $(document).width()
bubblesChartHeight = $(document).height() - 300


yearTicksWidth = bubblesChartWidth * 0.6
yearTicksLeft = yearTicksRight = 10
playButtonWidth = 70

lightVersionMode = $.browser.mozilla
if lightVersionMode

      for n in nodes
        if not n.x? or not n.y?
          n.x = x + n.maxr/2 + (bubblesChartWidth - totalw)/2
          n.y = bubblesChartHeight - nodesWithoutCoordsMarginBottom
          n.gravity = {x: n.x, y: n.y}
          x += 2 * n.maxr/2

