var curindex=0;
var timeinterval=5000;
var arr=new Array();
var brr=new Array();
var crr=new Array();
arr[0]="image/1.jpg";
arr[1]="image/2.jpg";
arr[2]="image/3.jpg";
arr[3]="image/4.jpg";

brr[0]="image/1-1.jpg";
brr[1]="image/2-1.jpg";
brr[2]="image/3-1.jpg";
brr[3]="image/4-1.jpg";

crr[0]="image/1-2.jpg";
crr[1]="image/2-2.jpg";
crr[2]="image/3-2.jpg";
crr[3]="image/4-2.jpg";

setInterval(changeimg,timeinterval);

function changeimg()
{
	var obj=document.getElementById("obj");
	var obj_item=document.getElementById("obj_item");
	var obj_icon=document.getElementById("obj_icon");
	if(curindex==arr.length-1)
	{
		curindex=0;
	}else
	{
		curindex+=1;
	}
	obj.src=arr[curindex];	
	obj_item.src=brr[curindex];
	obj_icon.src=crr[curindex];
}