I added this code to the original Project Gutenberg's book:
Code:
..as he fled with more than
mortal speed.</p>
<p style="display:none">Example of hidden text</p>
<p>I pursued him; and for many months this has been my task...
When searching for: 'I pursued him', it jumps to the page and highlights it.
Now, if I search for 'hidden text', it shows the result without the alert; clicking on it doesn't show the alert either.