About XML Content Loading
This XML content loader is all about getting information from the server and loading it without having to load a new page. It uses 3 different XML files with different content on each one. Each time the user presses a button, a request is sent to the server and asks for the corresponding XML file which has the associated content. In this case the user can load 1 of 3 different meal menus for each button pressed. I could have made this look nice, but it is the functionality that is the main thing here not the looks. So if you need to reduce the server load then this is the way you could do it, so long as the pages are the same HTML structure as the XML file, other wise you could get some displaying issues.