var held = null;
function chng(id,state){
	ext = state == 1 ? "_on.jpg" : ".jpg";
	if(id=="next"||id=="previous")
		nm = id;
	else
		nm = id.substring(3);
	if(held!=id){
		//alert(id);
		document.images[id].src = "files/"+nm+ext;
		//alert("numbers/"+nm+ext);
	}
}

function hold(id,number){
//alert(number);
	if(held!=null){
		nm = held.substring(3);
		document.images[held].src = "files/"+nm+".jpg";
	}
	current = parseInt(number,10);
	nm = id.substring(3);
	document.images[id].src = "files/"+nm+"_on.jpg";
	held = id;
	//alert(current);
}


function start(){
	total = document.links.length-2;
	current = 0;
	hold("img01", 1);
}

function getNext(dir){
	current+=dir;
	if(current > pages.length)
		current = 1;
	else if (current==0)
		current = total;
	//lnk = document.links[current+1];
	parent.main.location = "files/"+pages[current-1];
	num = current < 10 ? "0"+current : current;
	hold("img"+num, num);
}
parent.main.location = "files/"+pages[0];
window.onload = start;