if (window.XMLHttpRequest) {
	xmlhttp = new XMLHttpRequest();
} else {
	try {
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	}
	catch (e) {
		try {
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch (e) {
			xmlhttp = false;
		}
	}
}

if (window.addEventListener) {
	window.addEventListener("load", setupEvents, false);
} else if (window.attachEvent) {
	window.attachEvent("onload", setupEvents);
} else {
	window.onload = setupEvents;
}

function setupEvents() {
	var obj = document.getElementById('zdjecia-dodatkowe');
	var objs = obj.getElementsByTagName('li');
	for (var i=0; i<objs.length; i++) {
		var li = objs[i];
		var img = li.getElementsByTagName('img')[0];
		img.onclick = function() {
			swap_images(this);
		}
		img.onmouseover = function() {
			swap_images(this);
		}
	}
}

function swap_images(obj) {
	var big = document.getElementById('zdjecie-glowne');
	var src = obj.src.slice(0, obj.src.indexOf('_sm'));
	//big.parentNode.href = src + '_org.jpg';
	big.src = src+'.jpg';
}