var CurIndex = 0;
var PageTimer = 0;

function changeid(){
	var currslid=document.getElementById("autotab");
	var cursub=document.getElementById("autotab").getElementsByTagName('li');
	var items = cursub.length;
	
	document.getElementById("pic"+CurIndex).style.display = "none";
	
	if(items == CurIndex + 1)
	{
		CurIndex = 0;
	}
	else
	{
		CurIndex ++;
	}
	
	document.getElementById("pic"+CurIndex).style.display = "block";
}

function StartChange(){
	PageTimer = setInterval(changeid,3000);
}

function StopChange(){
	clearInterval(PageTimer);
}

window.onload = function(){
	StartChange();
}