function baidu_gowhere(formname)
{
    if (1 > formname.word.value.length)
    {
        alert("请输入关键字信息！");
        formname.word.focus();        
        return false;
    }
    var url;
    if (formname.myselectvalue.value == "0")
    {
        url = "http://www.baidu.com/baidu";
        document.search_form1.tn.value = "baidu";
        formname.method = "get";
    }
    if (formname.myselectvalue.value == "1")
    {
        url = "http://mp3.baidu.com/m";
        document.search_form1.tn.value = "baidump3";
        document.search_form1.ct.value = "134217728";
        document.search_form1.lm.value = "-1";
    }

    if (formname.myselectvalue.value == "4")
    {
        document.search_form1.tn.value = "news";
        document.search_form1.cl.value = "2";
        document.search_form1.rn.value = "20";
        url = "http://news.baidu.com/ns";
    }
    if (formname.myselectvalue.value == "5")
    {
        document.search_form1.tn.value = "baiduiamge";
        document.search_form1.ct.value = "201326592";
        document.search_form1.cl.value = "2";
        document.search_form1.lm.value = "-1";
        url = "http://image.baidu.com/i";
    }
    if (formname.myselectvalue.value == "6")
    {
        url = "http://post.baidu.com/f";
        document.search_form1.tn.value = "baiduPostSearch";
        document.search_form1.ct.value = "352321536";
        document.search_form1.rn.value = "10";
        document.search_form1.lm.value = "65536";
    }
    if (!url)
        return false;
    formname.action = url;
    return true;
}