//stuff for register page, calls ajax
function check_username(user){
if (ajax){
ajax.open('get','chkusrnm.php?user='+encodeURIComponent(user));
ajax.onreadystatechange = handle_user;
ajax.send(null);
} else {
document.getElementById('usernm').innerHTML = 'This will be checked upon submission';
}
}
function handle_user(){
if ( (ajax.readyState == 4) && (ajax.status == 200) ) {
document.getElementById('usernm').innerHTML = ajax.responseText;
}
if ( (ajax.readyState == 1) && (ajax.status == 200) ) {
document.getElementById('usernm').innerHTML = 'Loading...';
}
}