HTML - Change\Update page contents without refreshing/reloading the page

<script type="text/javascript">
function change_page(id) {
  $('#content').load('page.php?id=' + id); //Must echo html code with the content of the page you want to display
}
</script>

<a href="#" onClick="change_page('1')" > One   </a>
<a href="#" onClick="change_page('2')" > Two   </a>
<a href="#" onClick="change_page('3')" > Three </a>

<div id="content"></div>