DEF TIME TimeSensor { loop TRUE cycleInterval 5 } #<l++>
  
  DEF SCRIPT Script {   
          directOutput TRUE
          field SFNode place USE PLACE
          field SFFloat position 0
          eventIn SFFloat set_fraction    
          eventOut SFColor value_changed  
          url "javascript:
          function set_fraction(value) {  
                  if (value < 0.5) {
                          position += 0.1;
                          value_changed = '0 1 1';
                  } else {
                          position -= 0.1;
                           value_changed = '1 0 0';
                          }
                  place.translation.y = position;
                  }
                  "
          }#<l++>