function image() {
};

image = new image();
number = 0;

image[number++] = "<a href = 'antipolo_population.php'><img src='antipoloimg/link_population.jpg' alt='Population'></a>";

image[number++] = "<a href = 'antipolo_services.php'><img src='antipoloimg/link_services.jpg' alt='Services'></a>";

image[number++] = "<a href = 'antipolo_history.php'><img src='antipoloimg/link_history.jpg' alt='History'></a>";

increment = Math.floor(Math.random() * number);

document.write(image[increment]);