code: function(noTicks, min, max, decimals){
      var delta = (max - min) / noTicks,
          magn = Flotr.getMagnitude(delta),
          tickSize = 10,
          norm = delta / magn; // Norm is between 1.0 and 10.0.
          
      if(norm < 1.5) tickSize = 1;
      else if(norm < 2.25) tickSize = 2;
      else if(norm < 3) tickSize = ((decimals === 0) ? 2 : 2.5);
      else if(norm < 7.5) tickSize = 5;
      
      return tickSize * magn;
    }
docs: Function calculates the ticksize and returns it.
  @param {Integer} noTicks - number of ticks
  @param {Integer} min - lower bound integer value for the current axis
  @param {Integer} max - upper bound integer value for the current axis
  @param {Integer} decimals - number of decimals for the ticks
  @return {Integer} returns the ticksize in pixels