var searchBox;
var changebtn = document.getElementById('changebtn');

// create a new geocoder object
geocoder = new google.maps.Geocoder();

// add event listener
changebtn.addEventListener('click', assignLocation);

// Set the bounds
var defaultBounds = new google.maps.LatLngBounds(
new google.maps.LatLng(-33.8902, 151.1759),
new google.maps.LatLng(-33.8474, 151.2631));

// This autocomplete is for use in the search within time entry box.
    searchBox = new google.maps.places.Autocomplete(
        document.getElementById('new_location'), defaultBounds);

}

// geocodes the address and directs the page to the server end
function assignLocation () {


    var new_location = document.getElementById('new_location').value;

    var lat, lng;

    geocoder.geocode({'address' : new_location}, function (results, status) {

    // checks if the returned result is ok
    if ( status === 'OK' ) {

        if ( results[0] ) {

            // assign the latlng values
            lat = results[0].geometry.location.lat;
            lng = results[0].geometry.location.lng;

        }
        else
            alert ("No results found");
        }
    else {
        alert("Error: " + status);
    }

    alert("lat: "+lat+" lng: "+lng);

    });
}