var num = 0;
var temp = true;

function changeBgImg(imgsrc,divid)
{
	var n=0; 
	document.getElementById('maintd').style.background = "url(" + imgsrc +")";
	for(n=0; n < len; n++)
	{
		var newdiv = "des"+n;
		document.getElementById(newdiv).style.display = "none";
	}
	document.getElementById(divid).style.display = "block";
}
function setCls(numid)
{
	for(var n=0; n < len; n++)
	{
		var temp = "num"+n;
		document.getElementById(temp).className = "no-bord";
	}
	document.getElementById(numid).className = "bord";
}
function remCls(numid)
{
	document.getElementById(numid).className = "no-bord";
}
function randomrotate()
{
	var d = num;
	if(temp)
	{
		d = 0;
		num = 0;
		temp = false;
	}
	var did = "des"+d;
	var iid = "img"+d;
	var nid = "num"+d;
	var isrc = document.getElementById(iid).src;
	document.getElementById('maintd').style.background = "url("+isrc+")";
	//document.getElementById('maintd').style.background-repeat = "no-repeat";
	for(var n=0; n < len; n++)
	{
		var temp = "des"+n;
		document.getElementById(temp).style.display = "none";
	}
	document.getElementById(did).style.display = "block";
	setCls(nid,len);
	num++;
	if(num >= len)
	{
		num = 0;
	}
}

setInterval("randomrotate()",10000);