Very simple script needed, should take less than 10 minutes scripting, so it's very low budget: 10 USD.
The script should call or load an external .php file for each season or per 4 months.
During the winter period, it should load winter.php.
During the spring period, it should load spring.php.
During the summer period, it should load summer.php.
During the autumn period, it should load autumn.php.
I am going to place the file on my website, so it should load the appropiate banner for each season.
Like said it's a very easy assignment for PHP codes, the skill I lack.
Budget: 10 USD.