// login.js

function verify_login(){
	var f = document.forms['MainForm'];
	var fd = null;
	var err = '';
	if (is_empty(f.password.value)) {err="Please enter your password."; fd=f.password; }
	if (is_empty(f.username.value)) {err="Please enter your username."; fd=f.username; }
	if (err==''){
		return true;
	} else {
		alert(err);
		fd.focus();
		return false;
	}
}

function do_login(){
	var f = document.forms['MainForm'];
	f.cmd.value = 'login';
	f.submit();
}