function checkForm() {
    if (document.loginFormTop.userName.value == "") {
        alert("请输入账号！");
        document.loginFormTop.userName.focus();
        return false;
    }
    if (document.loginFormTop.userPwd.value == "") {
        alert("请输入密码！");
        document.loginFormTop.userPwd.focus();
        return false;
    }
	return true;
}	
function rightLogin() {
	if (checkForm()) {  
		document.loginFormTop.submit();
	}
}