If you face with Strict Standards: Non-static method ... on line XX error and you are using Joomla 2.5-3.x don't worry about it we will help to fix this problem.
Honestly, we can't called it "error", it is a message for developers, but it is not change the question, your visitors shouldn't see it. We will discuss 3 methods of how to fix fix Strict Standards: Non-static method in Joomla.
Method 1: How to hide the Strict Standards in Joomla. You can hide this message through your Joomla admin area.
Choose "None" on the "Error Reporting" row. Click save and you will never see Strict Standards: Non-static method error.
Method 2: Change php error reporting on server side. You can also disable Strict Standards: Non-static method on your server, by changing php settings.
Find your php.ini file (root folder) and change the attribute that is called error_reporting:
from: error_reporting = E_ALL | E_STRICT to: error_reporting = E_ALL & ~E_NOTICE & ~E_WARNING & ~E_STRICT & ~E_DEPRECATED
Method 3: Modify the template file. If two previous method is not available for you, we have the third way to fix Strict Standards: Non-static method.
Find the default. php file, it have to be in templates/template_name/layout/default.php
Add error_reporting(0); in this file right after the <?php phrase or you can also try to add: ini_set('error_reporting', E_ALL & ~E_NOTICE & ~E_WARNING & ~E_STRICT & ~E_DEPRECATED); ini_set('display_errors','Off');
Find more interesting information in Joomla tutorials section.