function dezInt(num, size, prefix) {
	prefix = (prefix) ? prefix:"0";
	var minus = (num<0) ? "-":"", result = (prefix=="0") ? minus:"";
	num = Math.abs(parseInt(num,10));
	size -= (""+num).length;
	for (var i=1; i<=size; i++) {
		result += ""+prefix;
	}
	result += ((prefix!="0") ? minus:"") + num;
	return result;
}
var galleryPath = 'img/paintings/';
function switchImage(str, int) {
	var newImage = galleryPath + str + '/Lopine' + dezInt(int, 2, 0) + '.jpg';
	document.getElementById('painting').src = newImage;
	document.getElementById('painting').alt = 'Lopine' + dezInt(int, 2, 0);
}