Forums / Cotonti / Support / Ajax hash address

After following the documentation here: http://www.cotonti.com/docs/devel/ajax_helpers and including these lines into my plugin:

$plugin_body .= "<div id=\"ajaxBlock\"></div>";
$plugin_body .= "<a href=\"#get;page.php;al=mhodges\" class=\"ajax\">get ajax</a>";

It only loads the index.php regardless of the value of href attribute. Help!