//tong so hinh

var total_banner =5;
var time_banner =8000;
var intervalId_banner = 0;
var inc_banner	=	1;


window.onload = function() {
setClass();
intervalId_banner=setInterval("displaytime_banner()", time_banner);
};


//start =1 img dau tien

function setClass()
{
//add class for li
 	var aClass=new Array ('one','two','three','ford','five');	
		for (i=1;i<=total_banner;i++)
		{
			document.getElementById('c_banner_'+i).className =aClass[i-1];
		}
		
	
}
function displaytime_banner()
{		
	move_tab_banner(inc_banner)		
	inc_banner++;
	if(inc_banner==total_banner+1) inc_banner=1;
}
	
//num vi tri move
function move_tab_banner(num)
{

	BIG_BANNER		=	'big_banner_'+num
	NUM_BANNER	=	'num_banner_'+num
	// for big image
	for (i=1;i<=total_banner;i++)
	{
		
		document.getElementById('big_banner_'+i).style.display='none';
	}		
	document.getElementById(BIG_BANNER).style.display='block';	
	//add class for number
	for (i=1;i<=total_banner;i++)
	{
	
		document.getElementById('num_banner_'+i).className ="";
	}	
	document.getElementById(NUM_BANNER).className ="act";
			
}
function stopdisplay_banner(num)
{	
	clearInterval(intervalId_banner);	
	move_tab_banner(num);
}
function playdisplay_banner(num)
{
	intervalId_banner=setInterval("displaytime_banner()", time_banner);
}