Enable cookies after refusing

Hello,

I’m wondering if there is a function i can use so users can enable cookies after they have refused them?

For example if they have declined cookies then a message will appear saying they have cookies disabled with a link to re enable.

<?php if ( function_exists('cn_cookies_accepted') && cn_cookies_accepted() ) { ?>

<a class="twitter-timeline" data-width="328" data-height="300" data-theme="light" data-link-color="#bc0000" href="https://twitter.com/">
</a> <script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>

<?php } else { 
	echo "Cannot display content. You currently have cookies disabled. Please enable cookies here {link to enable cookies}";
} ?>
<?php  } ?>