View a huge file from the webbrowser
<p>I have a 150MB txt file of server logs. Probably with PHP, I want to view 100 lines at a time starting from the end of the file. When the user clicks "Pevious 100 lines" or something, the next set of 100 is loaded.</p>

<p>What would be the best way to approach this?</p>

<p>I've seen these ajax chat widgets that have a similar feature, how do they do this task?</p>
