//文本框得到与失去焦点
function clearTxt(id,txt) {
	if (document.getElementById(id).value == txt)
		document.getElementById(id).value="" ;
	return ;
}
function fillTxt(id,txt) {
	if ( document.getElementById(id).value == "" )
		document.getElementById(id).value=txt;
	return ;
}

//焦点图片轮换
function $(id) { return document.getElementById(id); }

function addLoadEvent(func){
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function(){
			oldonload();
			func();
		}
	}
}

function addBtn() {
	if(!$('focus_turn')||!$('focus_pic')||!$('focus_tx')) return;
	var focusList = $('focus_pic').getElementsByTagName('li');
	if(!focusList||focusList.length==0) return;
	var btnBox = document.createElement('div');
	btnBox.setAttribute('id','focus_btn');
	var SpanBox ='';
	for(var i=1; i<=focusList.length; i++ ) {
		var spanList = '<span class="normal">'+i+'</span>';
		SpanBox += spanList;
	}
	btnBox.innerHTML = SpanBox;
	$('focus_turn').appendChild(btnBox);
	$('focus_btn').getElementsByTagName('span')[0].className = 'current';
}

function classNormal(){
	var focusList = $('focus_pic').getElementsByTagName('li');
	var btnList = $('focus_btn').getElementsByTagName('span');
	var txList = $('focus_tx').getElementsByTagName('li');
	for(var i=0; i<focusList.length; i++) {
		focusList[i].className='normal';
		btnList[i].className='normal';
		txList[i].className='normal';
	}
}

function classCurrent(n){
	var focusList = $('focus_pic').getElementsByTagName('li');
	var btnList = $('focus_btn').getElementsByTagName('span');
	var txList = $('focus_tx').getElementsByTagName('li');
	focusList[n].className='current';
	btnList[n].className='current';
	txList[n].className='current';
}

var autoKey = false;
function btnTurn() {
	if(!$('focus_turn')||!$('focus_pic')||!$('focus_tx') || !$('focus_btn')) return;
	$('focus_turn').onmouseover = function(){autoKey = true};
	$('focus_turn').onmouseout = function(){autoKey = false};	
	var focusList = $('focus_pic').getElementsByTagName('li');
	var btnList = $('focus_btn').getElementsByTagName('span');
	var txList = $('focus_tx').getElementsByTagName('li');
	for (var m=0; m<btnList.length; m++){
		btnList[m].onmouseover = function() {
			classNormal();
			this.className='current';
			var n=this.childNodes[0].nodeValue-1;
			focusList[n].className='current';
			txList[n].className='current';
		}
	}
}

addLoadEvent(addBtn);
addLoadEvent(btnTurn);
addLoadEvent(setautoturn);

function setautoturn() {
	setInterval('autoTurn()', 5000);
}

function autoTurn() {
	if(!$('focus_turn')||!$('focus_pic')||!$('focus_tx')) return;
	if (autoKey) return;
	var focusList = $('focus_pic').getElementsByTagName('li');
	var btnList = $('focus_btn').getElementsByTagName('span');
	var txList = $('focus_tx').getElementsByTagName('li');
	for(var i=0; i<focusList.length; i++) {
		if (focusList[i].className == 'current') {
			var currentNum = i;
		}
	}
	if (currentNum==focusList.length-1 ){
		classNormal();
		classCurrent(0);
	} else {
		classNormal();
		classCurrent(currentNum+1);
	}

}

//相册焦点图片切换
function imageFocus(){
	if(!$('image_focus')||!$('image_focus_big')||!$('image_focus_small')) return;
	var imageSmallLists= $('image_focus_small').getElementsByTagName('li');
	var imageBigLists= $('image_focus_big').getElementsByTagName('li');
	for(var i=0; i<imageSmallLists.length; i++){
		imageSmallLists[i].setAttribute('nodeNo',i);
	}
	for(var i=0; i<imageSmallLists.length; i++){
		imageSmallLists[i].onmouseover= function() {
			var n= this.getAttribute('nodeNo');
			for(var m=0; m<imageBigLists.length; m++){
				imageBigLists[m].className='';	
			}
			imageBigLists[n].className='current';		
		}
	}
}
addLoadEvent(imageFocus);

//搜索
function searchBox(){
	if(!$('more_search')||!$('search_box')) return;
	$('more_search').onclick=function(){
		$('search_box').className= '';
		$('more_search').style.display='none';
		$('close_search').style.display='block';
	}
	
	$('close_search').onclick=function(){
		$('search_box').className= 'fixoneline';
		$('more_search').style.display='block';
		$('close_search').style.display='none';
	}

}
addLoadEvent(searchBox);

function addseccode() {

	if(noseccode != 0) return;
	
	$('login_authcode_input').style.display = 'block';
	if($('login_authcode_img').style.display == 'block') {
		$('login_authcode_img').style.display='none';
	} 
	$('login_showclose').style.display = 'block';
	$('user_login_position').className = 'current';
}

function showseccode() {
	$('login_authcode_img').style.display='block';
	updateseccode();
}

function hidesec() {
	$('login_authcode_input').style.display = 'none';
	$('login_showclose').style.display = 'none';
	$('login_authcode_img').style.display = 'none';
	$('user_login_position').className = '';
}

function gotourl(url)
{
	location.href = url;
}

/***Added By Kenneth****/
function fillCode(obj)
{
	if ($('secode').value == "验证码")
	{
		$('secode').value = "";
	}
	$('secode').value += obj.innerHTML;
}

function externalLinks()
{
	if (!document.getElementsByTagName) return; 
	var anchors = document.getElementsByTagName("a"); 
	for (var i=0; i<anchors.length; i++)
	{
		var anchor = anchors[i]; 
		if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external")
		{
			anchor.target = "_blank"; 
		}
	}
}

window.onload = externalLinks;

setInterval(setAnnouncement, 5000);
var announcements;
var current_announcement = 0;

function setAnnouncement()
{
	var obj = document.getElementById("ann_" + current_announcement++);
	if (obj)
	{
		obj.style.display = "inline";
		obj = document.getElementById("ann_" + (current_announcement - 2));
		if (obj)
		{
			obj.style.display = "none";
		}
	}
	else
	{
		obj = document.getElementById("ann_" + (current_announcement - 2));
		if (obj)
		{
			obj.style.display = "none";
		}
		current_announcement = 0;
		obj = document.getElementById("ann_" + current_announcement++);
		if (obj)
		{
			obj.style.display = "inline";
		}
	}
}

//广告轮播
var ad_turn = new Array();
var ad_turn_current = new Array();
var ad_turn_id = 0;
function start_ad_turn(ad, count)
{
	//将所有广告设置为不显示状态
	for(var i = 0; i < count; i++)
	{
		var obj = document.getElementById(ad + i);
		if (obj != null)
		{
			obj.style.display = "none";
		}
	}
	//初始化数据
	ad_turn[ad] = count;			//广告轮播个数
	ad_turn_current[ad] = 0;	//当期播放的广告序号，初始为0
	//首次播放
	set_ad_turn();
	if (ad_turn_id == 0)
	{
		//开启定时器调用 function set_ad_turn，每隔5000毫秒切换一次
		ad_turn_id = setInterval(set_ad_turn, 5000);
	}
}

function set_ad_turn()
{
	//循环检查所有广告的状态
	for(var ad in ad_turn)
	{
		//将当前广告状态设置为不显示
		var obj = document.getElementById(ad + ad_turn_current[ad]);
		if (obj)
		{
			obj.style.display = "none";
		}
		//将当前广告位序号+1
		ad_turn_current[ad]++;
		
		obj = document.getElementById(ad + ad_turn_current[ad]);
		if (obj)
		{
			//如果存在下一广告位，则状态设置为显示
			obj.style.display = "block";
		}
		else
		{
			//如果不存在下一广告位，则当前广告位序号重置为0，重新循环
			ad_turn_current[ad] = 0;
			obj = document.getElementById(ad + ad_turn_current[ad]);
			obj.style.display = "block";
		}
	}
}
//结束广告轮播