anchor.diff:  
       }
   
  +    // call it remove or hide or clear?
  +    function removeAllRoutes(){
  +      if (renderArray != undefined){
  +        // simply setting renderArray = null doesn't work        
  +        for(var i = 0; i < renderArray.length; i++){
  +          renderArray[i].setDirections( { routes: [] } ); 
  +        }
  +
  +        // probably not necessarry
  +        for(var i = 0; i < requestArray.length; i++){
  +          requestArray[i] = null;
  +        }
  +      }
  +
  +    }
  +
       // Random Color Generator
       function getRandomColor() {
           var letters = '0123456789ABCDEF'.split('');
  
positive.code:     $(".animate_all").click(function (e) {
          e.preventDefault();
  
          resetRoute();
          requestAllDayLocations();
  
  
negative.code: 
          ////// event listener for user adding location by clicking on map /////
          google.maps.event.addListener(map, 'click', function (event) {
              var latitude = event.latLng.k;
              var longitude = event.latLng.B;
              var day_id = $('#location_day_id').val();
  
              
              addLocation(latitude, longitude, day_id, event);
  
          });
  