DEF SCRIPT Script {   
          directOutput TRUE
          field SFNode self USE SCRIPT
  
          field SFFloat accel IS accel
  
          field  SFTime  tick   0
  
          field SFNode group USE GROUP
  
          field SFNode state IS state
          field SFInt32 id IS id
  
          field SFNode object IS object
          field SFNode ground USE GROUND
          field SFFloat position 0
          field SFFloat color 0.5
          field SFFloat rotation 0
  
          field SFInt32 sign 1
          field SFFloat speed 1
  
          eventIn SFFloat set_fraction    
          url "javascript: