function setCookie(key, value) {
    document.cookie = key + "=" + escape(value);
}
function getCookie(key) {
    if (document.cookie.length) {
        var cookies = ' ' + document.cookie;
        var start = cookies.indexOf(' ' + key + '=');
        if (start == -1) { return null; }
        var end = cookies.indexOf(";", start);
        if (end == -1) { end = cookies.length; }
        end -= start;
        var cookie = cookies.substr(start,end);
        return unescape(cookie.substr(cookie.indexOf('=') + 1, cookie.length - cookie.indexOf('=') + 1));
    }
    else { return null; }
}
function onSearch(form) {
    if (form.keyword.value=='') {
        alert('请输入搜索关键字。');
        return false;
    }
    if (form.bftype.value=="0") {
        form.bfkey.value=form.keyword.value;
        form.author.value="";
        form.series.value="";
    } else if (form.bftype.value=="1") {
        form.bfkey.value="";
        form.author.value=form.keyword.value;
        form.series.value="";
        form.keyword.value="";
    } else {
        form.bfkey.value="";
        form.author.value="";
        form.series.value=form.keyword.value;
        form.keyword.value="";
    }
}
function onfocusalert(form) {
    /*var t = getCookie("onfa");
    if (t == null) {
        alert("ttest");
        setCookie("onfa", "1");
        form.keyword.focus();
    }*/
}