PHP and javascript - Running function onclick properly [closed]

Hello, I'm a one-page developer of a client. Inside this page, I put a link in the header (header.php file) inside the DIV structure which looks like this:

<div onclick="irParaMinhasReservas();" style="cursor: pointer;" id="btnMinhasReservas2" class="ph00_9"></div>

By suggestion in another forum, I set the irParaMinhasReservas() function in the main.js file as follows:

function irParaMinhasReservas(){
location.href = 'index.php?param=1'; }

That is, when I have the variable param defined, it should go to index.php page and automatically open a tab that exists inside. The top of the index.php page looks like this:

<?php
session_start("usuario");
if(isset($_GET['param'])){
    echo "<script>abreAba(2,logado);</script>";
}?>

But for now I could not make it work. What could I have done wrong or might have forgotten in the codes I set?

Thanks to anyone who can help me.