function cs50Info(name)
{
    // deal with the situation where nothing is chosen
    if(name == "")
        return;
        
    // create a new AJAX object
    var ajax = new XMLHttpRequest();
    
    // when the page is loaded, have a callback function pre-fill our div
    ajax.onreadystatechange = function() {
        if (ajax.readyState == 4 && ajax.status == 200) {
            $('#infodiv').html(ajax.responseText);
        }
    };
    
    // open the requested file and transmit the data
    ajax.open('GET', name + '.html', true);
    ajax.send();
    
}