function yk_get_hotkeyword() {
    var query = ["\u5b6b\u4ef2\u745c","\u5c38\u4f4d\u7d20\u9910","\u7fa4\u5275\u4f75\u5947\u7f8e","h1n1\u75ab\u82d7","\u767d\u6591\u75c7"];
    return query;
}

var cur_query=null;
function update_element(elm) {
    if(cur_query==null) {
        var query=yk_get_hotkeyword();
        var l=query.length;
        var i=Math.round(Math.random()*1000) % l;
        cur_query=query[i];
    }
    elm.value=cur_query;
}