Checks the ajaxreadystate and sets the input expectations to XML. After a news channel is selected, the Javascript selects the link and title from the XML file. It loops through information for each item. If there is a publication date it posts that date, otherwise, it uses a standard date that's included with each item. The javascript concatenates the info together to create an un-ordered list based on the channel selected and info in the XML file. If a new channel is selected, it clears the old one displaying a loading image until it finds the next XML file to display.