add margin setting between top of chart area and zoom / data range row. currently one has to set top variable for all axis to move them all uniformly, also offset for axis labels and axis title not uniform, they should all take into account the opposite value of axis and move as group, also spacing between labels and axis title not dynamic, the width of the labels can leave to much space or to little, even overlap. comments specific to highstock, not sure if highcharts works same way