var currentNewsType = "";
var currentNewsId = -1;

var newsTimer;

$(document).ready(function()
{
	setNewsTimer();
});

function setNewsTimer()
{
	newsTimer = setTimeout(function()
	{
		var _currentNewsId;
		
		if(currentNewsId == -1)
		{
			_currentNewsId = 2;
		}
		else if(currentNewsId >= 4)
		{
			_currentNewsId = 1;
		}
		else
		{
			_currentNewsId = currentNewsId + 1;
		}
		
		showNews(_currentNewsId);
		setNewsTimer();
	}, 15000);
}

function clearOldNews()
{
	if(currentNewsType != "")
	{
		$('#' + currentNewsType + currentNewsId).hide();
		$('#' + currentNewsType + 'Paging').hide();
	}
	else
	{
		$('#news1').hide();
		$('#newsPaging').hide();
	}
}

function showCurrentPart(currentPart)
{
	$('#' + currentPart + ' .left02TrendyNewsThumb').hide();
	$('#' + currentPart).fadeIn(1000, function()
	{
		$('#' + currentPart + ' .left02TrendyNewsThumb img').ready(function()
		{
			$('#' + currentPart + ' .left02TrendyNewsThumb').fadeIn(1600);
		});
	});
}

function showNews(id)
{
	clearTimeout(newsTimer);
	
	clearOldNews();
	
	if(currentNewsType != 'news')
	{
		$('#newsPaging').fadeIn(500);
	}
	else
	{
		$('#newsPaging').show();
	}
	
	currentNewsType = 'news';
	currentNewsId = id;
	
	showCurrentPart(currentNewsType + id);
}

function showSociety(id)
{
	clearOldNews();
	
	if(currentNewsType != 'society')
	{
		$('#societyPaging').fadeIn(500);
	}
	else
	{
		$('#societyPaging').show();
	}
	
	currentNewsType = 'society';
	currentNewsId = id;
	
	showCurrentPart(currentNewsType + id);
}

function showTechnology(id)
{
	clearOldNews();
	
	if(currentNewsType != 'technology')
	{
		$('#technologyPaging').fadeIn(500);
	}
	else
	{
		$('#technologyPaging').show();
	}
	
	currentNewsType = 'technology';
	currentNewsId = id;
	
	showCurrentPart(currentNewsType + id);
}