I am having trouble deleting a specific cookie in Chrome, debugger is not picking up anything at all, although this is the same code found in another SO thread

reset.php

```
<?php
session_start();
?>

<html>
<head>
<script type="text/javascript">
    // Option 1 - set cookie to null
    //$.cookie('welcome_<?php echo $_SESSION['myusername']; ?>', null);

    // Option 2 - delete specific cookie
    delete_cookie('welcome_<?php echo $_SESSION['myusername']; ?>');

    // relocate back to index.php
    window.location = 'index.php';
</script>
</head>

<body>
</body>

</html>

```

I have tried to both directly delete the cookie via `delete_cookie` and also to set the cookie to `null`, both without result.

I am not good with JavaScript, would appreciate if anyone could point me in the right direction. Must be something simple.

Thanks