I am new in php and cakephp. Just trying to make simple navigation menu.

```
<li><?php
      //pr($this->Html-);
      echo $this->Html->link('Entertainment', array(
          'controller' => 'UpcommingEntertainments',
          'action' => 'index'
      ));
      ?></li>

```

its works fine if I am at www.example.com. The problem is if I am at /admin/\* and i click this link, it takes me to www.example.com/admin/Entertainment, I want to go to www.wxample.com/Entertainment.
What should be my link code?