var currslid = 0;
var slidint;
var picarry = {};
var picNum = 4;
picarry[0] = "images/hp_pic1.jpg";
picarry[1] = "images/hp_pic2.jpg";
picarry[2] = "images/hp_pic3.jpg";
picarry[3] = "images/hp_pic4.jpg";
function setfoc(id){
	currslid = id;
	document.getElementById('mine_toppart').style.background  = "#000000 url("+picarry[id]+") left no-repeat";
	stopit();
}

function playnext(){
	if(currslid == picNum-1){
		currslid = 0;
	}else{
		currslid++;
	}
	setfoc(currslid);
	playit();
}
function playit(){
	slidint = setTimeout(playnext,10000);
}
function stopit(){
	clearTimeout(slidint);
}