This is my awesome algorythm for the Elevator Saga browser game!

elevator_saga_algorythm.js

{
    init: function(elevators, floors) {
        var reqFloor = 0, dir = "";
        floors.forEach(function(floor){
            floor.on("up_button_pressed", function(){
                dir = "up";
                reqFloor = floor.floorNum();
            });
            floor.on("down_button_pressed", function(){
                dir = "down";
                reqFloor = floor.floorNum();
            });
        });
        elevators.forEach(function(elevator){
            elevator.on("passing_floor", function(floor, direction){
                if (direction === dir && floor === reqFloor && elevator.loadFactor() < 0.75){
                    elevator.goToFloor(reqFloor, true);
                }
            })
            elevator.on("floor_button_pressed", function(numFloor){
                elevator.goToFloor(numFloor);
            });
            elevator.on("idle", function(){
                elevator.goToFloor(reqFloor);
            });
        });
    },
    update: function(dt, elevators, floors) {
        // We normally don't need to do anything here
    }
}