function checkSearch()
{
    var s = document.getElementById("tbSTxt").value;
    if(s == "" || s == "输入文学作品标题、作者进行搜索")
    {
        alert("请先输入要搜索的关键字/词")
        return false;
    }
}
function checkNavSelect()
{
    var strUrl = location.href.toLowerCase();

    var o = document.getElementById("iHNav").getElementsByTagName("li")
    for(i=0;i<o.length;i++)
    {
        sn = o[i].getElementsByTagName("a")[0].name;
        if(sn != "" && strUrl.indexOf(sn) > -1)
        {
            o[i].className = "cHNavASeled";
            break;
        }
    }
    /*
    if(strUrl.indexOf("datainfo") > -1 || strUrl.indexOf("dataview") > -1 || strUrl.indexOf("/s/") > -1 || strUrl.indexOf("/u/") > -1 || strUrl.indexOf("/login/") > -1 || strUrl.indexOf("/data/") > -1 || strUrl.indexOf("/txt/") > -1)
        bHomePage = false;
    */

    if(location.pathname == "" || location.pathname == "/")
        o[0].className = "cHNavASeled";   
}

function setSearchTxt()
{
    var s = document.getElementById("tbSTxt");
    s.onfocus=function(){if(this.value==this.defaultValue)this.value=''};
    s.onblur=function (){if(/^\s*$/.test(this.value)){this.value=this.defaultValue;this.style.color='#aaa'}}
    s.onkeydown=function(){	this.style.color='#333'}
}

function sTxtOnFocus()
{
    var s = document.getElementById("tbSTxt")
    if(s.value==s.defaultValue)
        s.value="";
}
function sTxtOnBlur()
{
    var s = document.getElementById("tbSTxt")
    if(/^\s*$/.test(s.value)){s.value=s.defaultValue;s.style.color='#aaa'}
}
function sTxtOnKeydown()
{
    var s = document.getElementById("tbSTxt")
    s.style.color='#333'
}

function setLoginHtm()
{
    var sNUrl = location.href.replace("&","|");
	if(sNUrl.indexOf("/login/") > -1)
	    sNUrl = "/";
	document.getElementById("ihlogin").href = "/login/ulogin.aspx?nexturl="+ sNUrl;
}

function headerDFLoad()
{
    //setSearchTxt();
    checkNavSelect();
    setLoginHtm();
}