function changeNewsDetail(idx)
{
	if(previousItem != -1)
	{
		document.getElementById("news_headline_" + previousItem).style.display = 'none';
	}
	document.getElementById("news_headline_" + idx).style.display = 'block';
	
	document.getElementById("news_image").src = './images/news/' + imageArr[idx] + '.jpg';
	document.getElementById("news_date").innerHTML = dateArr[idx];
	document.getElementById("news_spot").innerHTML = "<a href=\"" + idArr[idx] + "\">" + spotArr[idx] + "</a>";
	document.getElementById("news_link").href = "" + idArr[idx];
	
	previousItem = idx;
	return false;
}
function changeNewsDetailNoImage(idx)
{
	document.getElementById("news_image").src = './images/news/' + imageArr[idx] + '.jpg';
	document.getElementById("news_date").innerHTML = dateArr[idx];
	document.getElementById("news_spot").innerHTML = "<a href=\"" + idArr[idx] + "\">" + spotArr[idx] + "</a>";
	document.getElementById("news_link").href = "" + idArr[idx];
	
	previousItem = idx;
	return false;
}

var prevHeadlinePage = 1;
function headlinePageNext(count)
{
	if(prevHeadlinePage + 1 <= count)
		headlinePage(prevHeadlinePage + 1);
	return false;
}
function headlinePage(page)
{
    var xmlHttpReq = false;
    var self = this;
    var strURL = 'x_headline_page.php?page=' + page;
    
    if (window.XMLHttpRequest)
    {
        self.xmlHttpReq = new XMLHttpRequest();
    }
    else if (window.ActiveXObject)
    {
        self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
    }
    
    self.xmlHttpReq.open('GET', strURL, true);
    self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-javascript; charset=iso-8859-9');
    self.xmlHttpReq.onreadystatechange = function()
    {
        if (self.xmlHttpReq.readyState == 4)
        {
        	if(prevHeadlinePage != null)
        	{
        		document.getElementById('headline_page_' + prevHeadlinePage).className = "item";
        	}
        	document.getElementById('headline_page_' + page).className = "item active";
        	prevHeadlinePage = page;
        	
            headlinePageLoad(self.xmlHttpReq.responseText);
        }
    }
    self.xmlHttpReq.send('');
    return false;
}
function headlinePageLoad(str)
{
	eval(str);
	
	document.getElementById("headline_items").innerHTML = headlineItems;
	document.getElementById("news_headline").innerHTML = newsHeadline;
	previousItem = -1;
	changeNewsDetail(0);
}
function mostlyPage(type, page)
{
    var xmlHttpReq = false;
    var self = this;
    var strURL = 'x_mostly.php?type=' + type + '&page=' + page;
    
    if (window.XMLHttpRequest)
    {
        self.xmlHttpReq = new XMLHttpRequest();
    }
    else if (window.ActiveXObject)
    {
        self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
    }
    
    self.xmlHttpReq.open('GET', strURL, true);
    self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-javascript; charset=iso-8859-9');
    self.xmlHttpReq.onreadystatechange = function()
    {
        if (self.xmlHttpReq.readyState == 4)
        {
        	mostlyLoad(type, self.xmlHttpReq.responseText);
        }
    }
    self.xmlHttpReq.send('');
    return false;
}
function mostlyLoad(type, str)
{
	eval(str);
	
	document.getElementById("mostly_items_" + type).innerHTML = mostly_items;
	changeMostly(type, 0);
}
function changeMostly(type, idx)
{
	
	eval('elm = mostly_data_' + type);
	
	if(typeof(window['elm']) == "undefined")
		return;
	
	document.getElementById("mostly_image_" + type).src = '' + elm[idx]['image'] + '';
	document.getElementById("mostly_title_" + type).innerHTML = "<a href=\"" + elm[idx]['linked'] + "\">" + elm[idx]['title'] + "</a>";
	document.getElementById("mostly_short_content_" + type).innerHTML = "<a href=\"" + elm[idx]['linked'] + "\">" + elm[idx]['short_content'] + "</a>";
	document.getElementById("news_link").href = "" + idArr[idx];
}
function authorChange(author_id, author_name, article_id, article_link, _title, _date)
{
	document.getElementById("author_img").src = './images/author/' + author_id + "_m.jpg";
	document.getElementById("author_article_name").innerHTML = author_name;
	document.getElementById("author_article_title").innerHTML = '<a href="' + article_link + '">' + _title + "</a>";
	document.getElementById("author_article_date").innerHTML = _date;
}
function chairmanChange(id, name, phone_number, email, chairman_location)
{
	document.getElementById("chairman_img").src = './images/chairman/' + id + ".jpg";
	document.getElementById("chairman_name").innerHTML = name;
	document.getElementById("chairman_phone_number").innerHTML = phone_number;
	document.getElementById("chairman_email").href = 'mailto:' + email;
	document.getElementById("chairman_location").innerHTML = chairman_location;
}
function changeMostlyTab(idx)
{
	if(idx == 1)
	{
		document.getElementById("mostly_readed").style.display = 'block';
		document.getElementById("mostly_commented").style.display = 'none';
	}
	else
	{
		document.getElementById("mostly_readed").style.display = 'none';
		document.getElementById("mostly_commented").style.display = 'block';
	}
}
function heightOptimizer()
{
	var _height = document.getElementById('base_middle').offsetHeight;
	
	if(_height < document.getElementById('base_right').offsetHeight)
		_height = document.getElementById('base_right').offsetHeight;
	
	document.getElementById('base').style.height = _height + "px";
	document.getElementById('base_middle').style.height = _height + "px";
	document.getElementById('base_right').style.height = _height + "px";
}
function drawTopMenu(menuitem, active_page)
{
	i = 0;
	str = '';
	sep_class = "sep";
	item_class = "item";
	for (i=0; i < 6; i++)
	{
		if(active_page == i)
		{
			sep_class = "active_sep_1";
			item_class = "active_item";
		}
		
		if(i == 0 && sep_class != "active_sep_1")
			str += '<div class="sep_first"></div>';
		
		if( !(i == 0 && sep_class == "sep"))
			str += '<div class="' + sep_class + '"></div>';
		
		str += '<div id="headline_nav_page_' + i + '" class="' + item_class + '"><a href="javascript:void()" onclick="changeHeadlineTab(' + i + ')">' + menuitem[i] + '</a></div>';
		
		if( i == 5 && sep_class == "active_sep_1" )
			str += '<div class="active_sep_2"></div>';
		
		if(active_page == i)
			sep_class = "active_sep_2";
		else
			sep_class = "sep";
		
		item_class = "item";
	}
	i = null;
	sep_class = null;
	item_class = null;
	
	return str;	
}
function changeHeadlineTab(idx)
{
	if(prevHeadlineTab == idx)
		return;
	
	document.getElementById('headline_nav').innerHTML = drawTopMenu(menuitem, idx);
	document.getElementById('headline_item_' + idx).style.display = 'block';
	if(prevHeadlineTab != "-1")
	{
		document.getElementById('headline_item_' + prevHeadlineTab).style.display = 'none';
	}
	prevHeadlineTab = idx;
}