You just need to redirect to the target page. How to do so will depend on the language you want to use.
If you want to use the JavaScript OnClick event of the button:
function Button1JSClick($sender, $params)
{
?>
//begin js
window.location = "advinfo.php";
//end
<?php
}
If you want to use the PHP OnClick event (the standard event):
function Button2Click($sender, $params)
{
header("Location: advinfo.php");
}