Simple question about displaying errors/messages

[eluser]gigas10[/eluser]
On every page I have this code.

Code:

<?php if($this->session->flashdata('msg')){
    echo $this->session->flashdata('msg');
} ?>

Then whenever I want to set a message

Code:

$this->session->set_flashdata('msg', '<div id="success-msg">Issue Added</div>');

or

$this->session->set_flashdata('msg', '<div id="error-msg">ERROR: Issue already in system</div>');