var i = 1;
var imageCount = 10;
var imagePath = "fileadmin/user_upload/pictures/services/grusskarten/";


function prevImg() {
	if (i != 1) {
		i--;
		if (i > imageCount)
			i = 1;
	} else
		i = imageCount;
	loadImg(i);
	setImg(i);
}


function nextImg() {
	i++;
	if (i > imageCount)
		i = 1;
	loadImg(i);
	setImg(i);
}


function loadImg(i) {
	var txtI = "";
	if (i < 100) {
		txtI = "0" +i;
		if (i < 10)
			txtI = "00" +i;
	} else
		txtI = i;
	document.ecard.src = imagePath + txtI + ".jpg";
}


function setImg(i) {
	document.getElementsByName("image")[0].value = document.getElementsByName("ecard")[0].src;
}