function validateSearch(par) {
    var obj = document.getElementById(par);
    if (obj.value.length == 0) {
        alert("请输入搜索内容 !");
        obj.focus();
        return false;
    }
    else
        return true;  
}

function validateNewsLetter(par) {
    var emailReg = /^([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/;
    var obj = document.getElementById(par);
    if (obj.value.length == 0 || obj.value == "请输入您的邮箱地址") {
        alert("请输入邮件地址 !");
        obj.focus();
        return false;
    }
    else if (!emailReg.test(obj.value)) {
        alert("请输入正确的邮箱地址 ! ");
        obj.focus();
        return false;
    }
    else
        return true;
}

function addFavorites(title, url, desc) {
    if ((typeof window.sidebar == 'object') && (typeof window.sidebar.addPanel == 'function'))
        window.sidebar.addPanel(title, url, desc);
    else
        window.external.AddFavorite(url, title);
}