var intervalID;
var num = 0;
var longSection = 2;

function startInterval()
{
	intervalID = setInterval(tokenTab, 8000);
}

function tokenTab()
{
	if (longSection > 2)
	{
		longSection = 1;
	}
	
	SelectTab(longSection);

	longSection ++;
}

function stopInterval()
{
	clearInterval(intervalID);
}

function SetTabButton(strButtonID, strdisplayStyle)
{
	var btButton = document.getElementById(strButtonID);
	btButton.src = strdisplayStyle;
	return true;
}

function SetTab(strTableID, strdisplayStyle)
{
	var tblTable = document.getElementById(strTableID);
	tblTable.style.display = strdisplayStyle;
	return true;
}

function ClickTab(longSection)
{
	SelectTab(longSection);
	clearInterval(intervalID);
}

function SelectTab(longSection)
{
	switch (longSection) {
	case 1 : 
		SetTabButton('tab-music-newrelease', 'http://www.pleng.com/images//2008/music_hnwrelaes-act.jpg');	
		SetTabButton('tab-music-recommended', 'http://www.pleng.com/images//2008/music_hnwrecom.jpg');	
		SetTab('music-newrelease', 'block');	
		SetTab('music-recommended', 'none');
		break;
	case 2 : 
		SetTabButton('tab-music-newrelease', 'http://www.pleng.com/images//2008/music_hnwrelaes.jpg');	
		SetTabButton('tab-music-recommended', 'http://www.pleng.com/images//2008/music_hnwrecom-act.jpg');	
		SetTab('music-newrelease', 'none');	
		SetTab('music-recommended', 'block');
		break;
	case 3 : 
		SetTabButton('tab-dl-newrelease', 'http://www.pleng.com/images//2008/download_btnwre_act.gif');	
		SetTabButton('tab-dl-top', 'http://www.pleng.com/images//2008/download_btdl.gif');	
		SetTab('dl-newrelease', 'block');	
		SetTab('dl-top', 'none');
		break;
	case 4 : 
		SetTabButton('tab-dl-newrelease', 'http://www.pleng.com/images//2008/download_btnwre.gif');	
		SetTabButton('tab-dl-top', 'http://www.pleng.com/images//2008/download_btdl_act.gif');	
		SetTab('dl-newrelease', 'none');	
		SetTab('dl-top', 'block');
		break;
	case 5 : 
		SetTabButton('tab-movie-showing', 'http://www.pleng.com/images//2008/movie_btnwshow_act.gif');	
		SetTabButton('tab-movie-coming', 'http://www.pleng.com/images//2008/movie_btcoming.gif');	
		SetTab('movie-showing-stick', 'block');	
		SetTab('movie-coming-stick', 'none');
		SetTab('movie-showing-arch', 'block');	
		SetTab('movie-coming-arch', 'none');
		SetTab('movie-showing-arch-page', 'block');	
		SetTab('movie-coming-arch-page', 'none');
		break;
	case 6 : 
		SetTabButton('tab-movie-showing', 'http://www.pleng.com/images//2008/movie_btnwshow.gif');	
		SetTabButton('tab-movie-coming', 'http://www.pleng.com/images//2008/movie_btcoming_act.gif');	
		SetTab('movie-showing-stick', 'none');	
		SetTab('movie-coming-stick', 'block');
		SetTab('movie-showing-arch', 'none');	
		SetTab('movie-coming-arch', 'block');
		SetTab('movie-showing-arch-page', 'none');	
		SetTab('movie-coming-arch-page', 'block');
		break;
	case 7 : 
		SetTabButton('tab-music-newrelease', 'http://www.pleng.com/images//2008/music/music_new_a.gif');	
		SetTabButton('tab-music-recommended', 'http://www.pleng.com/images//2008/music/music_rec_nona.gif');	
		SetTabButton('tab-music-rewind', 'http://www.pleng.com/images//2008/music/music_rew_nona.gif');	
		SetTab('music-newrelease', 'block');	
		SetTab('music-recommended', 'none');
		SetTab('music-rewind', 'none');
		break;
	case 8 : 
		SetTabButton('tab-music-newrelease', 'http://www.pleng.com/images//2008/music/music_new_nona.gif');	
		SetTabButton('tab-music-recommended', 'http://www.pleng.com/images//2008/music/music_rec_a.gif');	
		SetTabButton('tab-music-rewind', 'http://www.pleng.com/images//2008/music/music_rew_nona.gif');	
		SetTab('music-newrelease', 'none');	
		SetTab('music-recommended', 'block');
		SetTab('music-rewind', 'none');
		break;
	case 9 : 
		SetTabButton('tab-music-newrelease', 'http://www.pleng.com/images//2008/music/music_new_nona.gif');	
		SetTabButton('tab-music-recommended', 'http://www.pleng.com/images//2008/music/music_rec_nona.gif');	
		SetTabButton('tab-music-rewind', 'http://www.pleng.com/images//2008/music/music_rew_a.gif');	
		SetTab('music-newrelease', 'none');	
		SetTab('music-recommended', 'none');
		SetTab('music-rewind', 'block');
		break;
	case 10 : 
		SetTabButton('tab-music-thai', 'http://www.pleng.com/images//2008/music/thai_a.gif');	
		SetTabButton('tab-music-asian', 'http://www.pleng.com/images//2008/music/asian_nona.gif');	
		SetTabButton('tab-music-inter', 'http://www.pleng.com/images//2008/music/inter_nona.gif');
		SetTabButton('tab-music-looktung', 'http://www.pleng.com/images//2008/music/looktung_nona.gif');		
		SetTab('music-thai', 'block');	
		SetTab('music-asian', 'none');
		SetTab('music-inter', 'none');
		SetTab('music-looktung', 'none');
		break;
	case 11 : 
		SetTabButton('tab-music-thai', 'http://www.pleng.com/images//2008/music/thai_nona.gif');	
		SetTabButton('tab-music-asian', 'http://www.pleng.com/images//2008/music/asian_a.gif');	
		SetTabButton('tab-music-inter', 'http://www.pleng.com/images//2008/music/inter_nona.gif');
		SetTabButton('tab-music-looktung', 'http://www.pleng.com/images//2008/music/looktung_nona.gif');		
		SetTab('music-thai', 'none');	
		SetTab('music-asian', 'block');
		SetTab('music-inter', 'none');
		SetTab('music-looktung', 'none');
		break;
	case 12 : 
		SetTabButton('tab-music-thai', 'http://www.pleng.com/images//2008/music/thai_nona.gif');	
		SetTabButton('tab-music-asian', 'http://www.pleng.com/images//2008/music/asian_nona.gif');	
		SetTabButton('tab-music-inter', 'http://www.pleng.com/images//2008/music/inter_a.gif');
		SetTabButton('tab-music-looktung', 'http://www.pleng.com/images//2008/music/looktung_nona.gif');		
		SetTab('music-thai', 'none');	
		SetTab('music-asian', 'none');
		SetTab('music-inter', 'block');
		SetTab('music-looktung', 'none');
		break;
	case 13 : 
		SetTabButton('tab-music-thai', 'http://www.pleng.com/images//2008/music/thai_nona.gif');	
		SetTabButton('tab-music-asian', 'http://www.pleng.com/images//2008/music/asian_nona.gif');	
		SetTabButton('tab-music-inter', 'http://www.pleng.com/images//2008/music/inter_nona.gif');
		SetTabButton('tab-music-looktung', 'http://www.pleng.com/images//2008/music/looktung_a.gif');		
		SetTab('music-thai', 'none');	
		SetTab('music-asian', 'none');
		SetTab('music-inter', 'none');
		SetTab('music-looktung', 'block');
		break;
	}
	return true;
}