Select and highlight directionsService polyline

var map;
var myLatLng;
var dirService;

function initialize() {
            var latlng = new google.maps.LatLng(40.7694,-73.9542);
         
            myLatLng = latlng;
            var myOptions = {
              zoom:9,
              center: latlng,
              mapTypeId: google.maps.MapTypeId.ROADMAP
            };            
            map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
          
            dirService = new google.maps.DirectionsService();
                     
            getDirections();
 }
function getDirections(){
    var start = 'Broadway, New York, NY, United States';
    var end = 'Lincoln Memorial, Washington, DC, United States';    
    
    var request = {
        origin:start,
        destination:end,
        travelMode: google.maps.DirectionsTravelMode.DRIVING
    };    
    
    dirService.route(request, function(response, status) {
        if (status == google.maps.DirectionsStatus.OK) {
                 var steps = response.routes[0].legs[0].steps;             
             createColorPoly(steps);
        }
    });


    }
function createColorPoly(steps){    
    var path = Array();
       for(var step = 0; step < steps.length; step++){
           for(var stepP = 0; stepP < steps[step].path.length; stepP++){
                path.push(steps[step].path[stepP]);
           }
    }
  
       var polySelected = {'strokeWeight':'9','strokeColor':'red'};
      var polyUnselected = {'strokeWeight':'6','strokeColor':'blue'} ;
    
    var newPoly = new google.maps.Polyline(polyUnselected);
    newPoly.setPath(path);
    newPoly.setMap(map);
    google.maps.event.addListener(newPoly, 'mouseover', function(){newPoly.setOptions(polySelected);});
    google.maps.event.addListener(newPoly, 'mouseout', function(){newPoly.setOptions(polyUnselected);});
    
}
$(document).ready(function(){
initialize();
});