function initialize() {
var input = document.getElementById('id_address');
var options = {
types: ['address'],
componentRestrictions: {
country: 'us'
}
};
autocomplete = new google.maps.places.Autocomplete(input, options);
google.maps.event.addListener(autocomplete, 'place_changed', function() {
var place = autocomplete.getPlace();
for (var i = 0; i < place.address_components.length; i++) {
for (var j = 0; j < place.address_components[i].types.length; j++) {
if (place.address_components[i].types[j] == "postal_code") {
document.getElementById('postal_code').innerHTML = place.address_components[i].long_name;
}
}
}
})
}
google.maps.event.addDomListener(window, "load", initialize);