function $(element)
{
    if (arguments.length > 1)
    {
        for (var i = 0, elements = [], length = arguments.length; i < length; i++)
        elements.push($(arguments[i]));
        return elements;
    }
    if (typeof element == 'string')
    element = document.getElementById(element);
    return element;
}


function trim(inputString)
{
    return inputString.replace(/^ +/,"").replace(/ +$/,"");
}

//选择不同的搜索条件
function sr_ra_1(o)
{
    if(k=$("sr_keyw"))
    {
        //设置提示和背景颜色
        if(""==k.value || "请输入"==k.value.substring(0,3))
        {
            k.value = o.title
            k.style.color = "#AAB7C7"
        }
        $("sel_ra").value = o.title
        
        //设置搜索导向url
        var a = o.value.split("||")
        $("sr_fm").action = a[0]
    }
}


function search_check(o)
{
    var v = $("sr_keyw").value;
    if(v.length > 100)
    {
        alert("您输入的关键字过长！");
        return false;
    }
    if(v == "" || v.substring(0,3) =="请输入")
    {
        alert("请输入关键字！");
        return false;
    }
}


function getkeyword(obj)
{
    var skey = document.getElementById("sr_keyw").value;
    if(trim(skey)==""||"请输入"==skey.substring(0,3))
    {
        return true;
    }
    else
    {
        window.location.href=obj.href+"?keywords="+encodeURI(skey);
        return false;
    }
}