function img_open()
{
	var img = new getObj("img");
	img.style.width = "500px";
	img.style.backgroundPosition = "0px 0px";
}

function img_close(offset)
{
	var img = new getObj("img");
	img.style.width = "205px";
	img.style.backgroundPosition = "-"+offset+"px 0px";
}