YAHOO.util.Event.onDOMReady(init);

function init(){
    var not_login_btns = YAHOO.util.Dom.getElementsByClassName("not-login","a");
    YAHOO.util.Event.addListener(not_login_btns,"click",alert2login);
    YAHOO.util.Event.addListener("tvb_login_form","submit",login_validate);
}

function alert2login(evt){
    alert("請登入！\nPlease login!");
    YAHOO.util.Dom.get("username").focus();
    return YAHOO.util.Event.stopEvent(evt);
}

function login_fail(){
    alert('你的登入資料不正確，請重試。\nEither your username or password is incorrect, please try again.');
    YAHOO.util.Dom.get("username").focus();
    var url = window.location.href.replace("info=error","");
    window.location = url;
}

function login_validate(evt){
    if(!YAHOO.util.Dom.get("username").value){
        YAHOO.util.Dom.get("username").focus();
        return YAHOO.util.Event.stopEvent(evt);
    }
    if(!YAHOO.util.Dom.get("password").value){
        YAHOO.util.Dom.get("password").focus();
        return YAHOO.util.Event.stopEvent(evt);
    }
}