function showImage(id,num) {
	imagelist = document.getElementById('image_ids').value;
	imagearr = imagelist.split(",");
	// next = imagearr[Number(num)];
	nextId = imagearr[num];
	nextNum = num+1;
	prevId = imagearr[num-2];
	prevNum = num-1;
	//alert("prev: " + prevId + "this: " + id + " next: " + nextId);
	
	document.getElementById("image_container").style.backgroundImage = "url(http://www.welanders.fi/baker/media/.gallery/main" + id + ".jpg)";
	document.getElementById("image_container").style.visibility = "visible";
	document.getElementById("fade").style.visibility = "visible";
	document.getElementById("imagecontrol").style.visibility = "visible";
	if (prevId) {
		document.getElementById("previmg").style.visibility = "visible";
	} else {
		document.getElementById("previmg").style.visibility = "hidden";
	}
	if (nextId) {
		document.getElementById("nextimg").style.visibility = "visible";
	} else {
		document.getElementById("nextimg").style.visibility = "hidden";
	}
}

function prevImage() {
	showImage(prevId,prevNum);
}
function nextImage() {
	showImage(nextId,nextNum);
}


function hideImage() {
	document.getElementById("image_container").style.backgroundImage = "none";
	document.getElementById("image_container").style.visibility = "hidden";
	document.getElementById("fade").style.visibility = "hidden";	
	document.getElementById("imagecontrol").style.visibility = "hidden";
	document.getElementById("previmg").style.visibility = "hidden";
	document.getElementById("nextimg").style.visibility = "hidden";
}