Programmer required to add AJAX functionality to existing web pages developed in object-oriented style with PHP5 and MySQL 5 back-end. Web content uses Smarty templating system. Example project: clicking on a checkbox that does a MySQL update via AJAX then polls the server periodically for updates/results. Another example: AJAX shopping cart that allows for search, then updates dyamically with a list of available items, with a click on an item to move it into the shopping cart (and...