function showPopup(picture_id) {

	var popup = document.getElementById("popup_gallerie");
	popup.style.display = "block";
	
	var current_gallerie = document.getElementById("gallerie_current").value;
	var total_id = document.getElementById("image_count").value;
	
	image_no = picture_id;
	if (picture_id<10) {
		var image_no = "00"+picture_id;
	}
	else {
		if (picture_id<100) {var image_no = "0"+picture_id;}
	}
		
	var image = current_gallerie+"_"+image_no+".jpg";
	
	document.getElementById("image_current").value = picture_id;	
	document.getElementById("gallerie_big_picture").innerHTML = "<img src='../gallerie/"+current_gallerie+"/"+image+"'/>";
	document.getElementById("current_no").innerHTML = "(Bild "+picture_id+" von "+total_id+")";
	document.getElementById("current_image_name").innerHTML = "Bild-Nr.: "+current_gallerie+"_"+image_no;		
	
	window.scroll(0, 0);
}

function hidePopup() {

	var popup = document.getElementById("popup_gallerie");
	popup.style.display = "none";
	
}

function showPicture(action) {

	var current_id = document.getElementById("image_current").value;
	var current_gallerie = document.getElementById("gallerie_current").value;	
	var total_id = document.getElementById("image_count").value;
	
 	switch (action){

		case "next":
		
			var picture_id = parseInt(current_id) + 1;
			if (picture_id > total_id) {var picture_id = 1;}
		
			break;
			
		case "back":
		
			var picture_id = parseInt(current_id) - 1;
			if (picture_id < 1) {var picture_id = total_id;}
		
			break;			
			
	}
	
	image_no = picture_id;	
	if (picture_id<10) {
		var image_no = "00"+picture_id;
	}
	else {
		if (picture_id<100) {var image_no = "0"+picture_id;}
	}
	
	var image = current_gallerie+"_"+image_no+".jpg";
	
	document.getElementById("image_current").value = picture_id;
	document.getElementById("gallerie_big_picture").innerHTML = "<img src='../gallerie/"+current_gallerie+"/"+image+"'/>";
	document.getElementById("current_no").innerHTML = "(Bild "+picture_id+" von "+total_id+")";
	document.getElementById("current_image_name").innerHTML = "Bild-Nr.: "+current_gallerie+"_"+image_no;	
	
}