function onSub() {
	var username = document.getElementById('username').value;
	var userpwd = document.getElementById('userpwd').value;
	if (username =='' || userpwd =='') {
		alert('请填写用户名和密码！');
		return false;
	}
}

function Save() {
	var qq_num = document.getElementById('qq_num').value;
	var content = document.getElementById('content').innerText;
	if (qq_num == '' || content == '') {
		alert('请将信息填写完整！');
		return false;
	}
}