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: 
          //resist the urge to put requestDayLocations() here!
          resetRoute();
          calcRoute(dayLocations);
          removeMarkers();
      });
  
negative.code: 
      function calcAllRoutes() {
          var start, end, waypts;
          // var renderArray = [];
          // var requestArray = [];
  
          renderArray  = [];
          requestArray = [];
  
          removeMarkers();
  
  