/* Functions to remember user's name, or allow them to be anonymous.
   Relies on cookies.js

   Scott D. Anderson
   Fall 2009
*/

var username = getCookie("username");
if ( username == "" ) {
    document.writeln('<a href="javascript:savename()">Please identify yourself, if you want</a>');
} else {
    document.writeln('Hello, '+username+'!');
    document.writeln(' <a href="javascript:forgetname()">forget me</a>');
}
    
function savename() {
    username = prompt("What is your name?");
    setCookie("username",username,365);
    location.reload(true);
}

function forgetname() {
    setCookie("username",username,-1);
    location.reload(true);
}