var rssHeaderArr = new Array();
rssHeaderArr.push('BUSINESS');
rssHeaderArr.push('TECH');
rssHeaderArr.push('TRAVEL');
rssHeaderArr.push('ENTERTAINMENT');

function getRssHeader(langEx)
{
	if(langEx == '_th')
	{
		rssHeaderArr[0] = 'ธุรกิจ';	
		rssHeaderArr[1] = 'เทคโนโลยี';
		rssHeaderArr[2] = 'การเมือง';
		rssHeaderArr[3] = 'ไลฟ์สไตล์';
	}
}

function getFeed(index , langEx)
{	
	if(langEx == '')
	{
		changeRssHeader(index -1, langEx);
		if(index == 1)
		{
			getRSS("rssfeed/Business.xml");
			$('rsslink').href = "rssfeed/Business.xml";
		}
		else if(index == 2)
		{
			getRSS("rssfeed/Tech.xml");
			$('rsslink').href = "rssfeed/Tech.xml";
		}
		else if(index == 3)
		{
			getRSS("rssfeed/Travel.xml");
			$('rsslink').href = "rssfeed/Travel.xml";
		}
		else if(index == 4)
		{
			getRSS("rssfeed/Entertainment.xml");	
			$('rsslink').href = "rssfeed/Entertainment.xml";
		}
	}else
	{
		changeRssHeader(index -1);
		if(index == 1)
		{
			getRSS("rssfeed/Business_th.xml");
			$('rsslink').href = "rssfeed/Business_th.xml";
		}
		else if(index == 2)
		{
			getRSS("rssfeed/Tech_th.xml");
			$('rsslink').href = "rssfeed/Tech_th.xml";
		}
		else if(index == 3)
		{
			getRSS("rssfeed/Politics_th.xml");
			$('rsslink').href = "rssfeed/Politics_th.xml";
		}
		else if(index == 4)
		{
			getRSS("rssfeed/LifeStyle_th.xml");	
			$('rsslink').href = "rssfeed/LifeStyle_th.xml";
		}	
	}
}

function changeRssHeader(index, langEx)
{
	var html = '';
	$('rssHeader').innerHTML = '';
	for(var i = 0 ; i < 4 ; i++)
	{
		if(index == i)	
		{
			html += '<span class="txt_event_normalblue">' + rssHeaderArr[i] + '</span>';
		}
		else
		{
			html += '<a href="javascript:void(0)" onclick="getFeed(' + (i + 1) + ',\'' + langEx + '\')" class="txt_event_rsscat">' + rssHeaderArr[i] + '</a>';
		}
		if(i!=3)
		{
			html += '  |  ';
		}else
		{
			html += ' <img src="images/ajax-loader.gif" id="imageLoader" />';
		}
	}
	$('rssHeader').innerHTML = html;
}

function changeLink(index)
{
	$('link1').href = 'allnews.php?ch=' + (index+1) + '&i=1';
	$('link2').href = 'allnews.php?ch=' + (index+1) + '&i=2';
	$('link3').href = 'allnews.php?ch=' + (index+1) + '&i=3';
	$('link4').href = 'allnews.php?ch=' + (index+1) + '&i=4';
}

function setArticleBtn()
{
	if(articleIndex > 0)
	{
		$('prevArticle').style.visibility = '';
	}else
	{
		$('prevArticle').style.visibility = 'hidden';
	}
	
	if(articleIndex < (articleArr.length - 5))
	{
		$('nextArticle').style.visibility = '';
	}else
	{
		$('nextArticle').style.visibility = 'hidden';
	}
}

function getNextArticle()
{
	articleIndex++;
	setArticleBtn();
	for(var i = articleIndex; i<articleIndex +5 ;i++)
	{
		var divId = 'article_' + (i-articleIndex);
		var linkId = 'articleLink_' + (i-articleIndex);
		$(divId.toString()).title = articleArr[i][0];
		$(divId.toString()).src = articleArr[i][1];
		$(linkId.toString()).href = articleArr[i][2];		
	}
}

function getPrevArticle()
{
	articleIndex--;	
	setArticleBtn();
	for(var i = articleIndex; i<articleIndex +5 ;i++)
	{
		var divId = 'article_' + (i-articleIndex);
		var linkId = 'articleLink_' + (i-articleIndex);
		$(divId.toString()).title = articleArr[i][0];
		$(divId.toString()).src = articleArr[i][1];
		$(linkId.toString()).href = articleArr[i][2];		
	}
}