radient id='legendGradient' fx='5%' fy='5%' r='75%' spreadMethod='pad'>
          <stop offset='0%' stop-color='#cfd7f6' stop-opacity='1'/> 
          <stop offset='100%' stop-color='#919dd0' stop-opacity='1' /> 
   </radialGradient>
  <symbol id='calloutArrowDown' overflow='visible' >
      <path d='M 0,0 L 7,11 L 15,0 z' style='fill:#f4f1a4; stroke:#aea913; stroke-width:0.5;' />
  </symbol>
  <symbol id='calloutArrowUp' overflow='visible' >
      <path d='M 0,15 L 7,3 L 15,15 z' style='fill:#f4f1a4; strok