The tutorial explain on how to remove the powered by Jcal 1.5 footer information in your Jcal Pro joomla component.
Here’s how:
1. Back up joomlaroot/components/com_jcalpro folder
2. Removed he following lines
themes/default/theme.php , lines 1237-1239:
<div class="atomic">Powered by <a
href="http://dev.anything-digital.com/" target="_blank"><strong>JCal
Pro <span style="color: orange">1.5</span></strong></a></div>

include/functions.inc.php, lines 1350-1356:
$signature = ‘<a href="http://dev.anything-digital.com/" target="_blank">JCal Pro Calendar <span style="color:#FFA500"> ‘ . CALENDAR_VERSION . [...]

I’ve gotten around 9,000 + spam comments since September to October 2008. It was becoming such a pain to delete them using phpmyadmin tool in my cpanel until i implemented reCAPTCHA WordPress Plugin. It seems to be working pretty well so far. Please let me know if you have any issues.
Here is the easy way [...]

If you are looking a plugin to put iframes in external site or content within a page content without having to handcode HTML. Click the link below.

To enable you to place Javascript, PHP and CSS right in to your content! Not only in your articles, but also in sections, categories, modules, components, META tags, etc. Click the link below to visit the Joomla plugins.

If you are installing template, module, component and plugins in joomla or mambo the script will take ownership of the file and you will not be able to delete it using ftp.
Here are the three methods on how to delete it: