var imgNext;
	var imgPrev;
	
	function showBox(theTarget) {
		var theBody = document.getElementsByTagName('body')[0];
		var pageCoords = getPageCoords();
	
		var theShadow = document.createElement('div');
		theShadow.id = 'shadow';
		theShadow.style.height = (pageCoords[1] + 'px');
		theShadow.className = 'on';
		selects = document.getElementsByTagName("select");
		for (i = 0; i != selects.length; i++) {
			selects[i].style.visibility = "hidden";
		}
		theBody.insertBefore(theShadow, theBody.firstChild);
	
		var theLoading = document.createElement('div');
		theLoading.id = 'загрузка';
		theLoading.style.top = parseInt(pageCoords[2] + (pageCoords[0] - 55) / 2) + 'px';
		theLoading.onclick = function() { closeBox(); }
		theShadow.appendChild(theLoading);
	
		var imgPreload = new Image();
		imgPreload.onload = function() {
			var theBox = document.createElement('div');
			theBox.id = 'litebox';
			theBox.style.width = imgPreload.width + 10 + 'px';
			theBox.style.marginTop = parseInt(pageCoords[2] + (pageCoords[0] - imgPreload.height - 50) / 2) + 'px';
	
			var theImage = document.createElement('img');
			theImage.src = theTarget.href;
			theImage.alt = theTarget.title;
			theImage.width = imgPreload.width;
			theImage.onclick = function() { closeBox(); }
			theImage.title = "кликните, чтобы закрыть";
	
			var theCaption = document.createElement('p');
			theCaption.innerHTML = (theImage.alt) ? theImage.alt : '';
			theCaption.innerHTML += "<em>кликните на изображение или нажмите ESC для закрытия окна</em>";
	
			var allThumbs = new Array();
			var allLinks = document.getElementsByTagName('a');
			var linkLen = allLinks.length;
			for (i=0,j=0; i<linkLen; i++) {
				if (allLinks[i].getAttribute('rel') == 'lightbox') {
					allThumbs[j++] = allLinks[i];
				}
			}
			linkLen = allThumbs.length;
			for (i=0; i<linkLen; i++) {
				if (allThumbs[i].href == theTarget.href) {
					if (allThumbs[i-1]) {
						var thePrevLink = document.createElement('a');
						thePrevLink.className = 'prev';
						thePrevLink.title = allThumbs[i-1].title;
						thePrevLink.href = allThumbs[i-1].href;
						thePrevLink.onclick = function() { closeBox(); showBox(this); return false; }
						theCaption.insertBefore(thePrevLink, theCaption.firstChild);
						imgPrev = allThumbs[i-1];
					}
					if (allThumbs[i+1]) {
						var theNextLink = document.createElement('a');
						theNextLink.className = 'next';
						theNextLink.title = allThumbs[i+1].title;
						theNextLink.href = allThumbs[i+1].href;
						theNextLink.onclick = function() { closeBox(); showBox(this); return false; }
						theCaption.insertBefore(theNextLink, theCaption.firstChild);
						imgNext = allThumbs[i+1];
					}
				}
			}
	
			theShadow.removeChild(theLoading);
			theBox.appendChild(theImage);
			theBox.appendChild(theCaption);
			theShadow.appendChild(theBox);
	
			document.onkeypress = getKey;
			return false;
		}
		imgPreload.src = theTarget.href;
	}
	
	function getPageCoords() {
		var coords = [0, 0, 0];
		if (window.innerHeight) {
			coords[0] = window.innerHeight;
			coords[2] = window.pageYOffset;
		}
		else if (document.documentElement && document.documentElement.clientHeight != 0) {
			coords[0] = document.documentElement.clientHeight;
			coords[2] = document.documentElement.scrollTop;
		}
		else if (document.body) {
			coords[0] = document.body.clientHeight;
			coords[2] = document.body.scrollTop;
		}
	
		var test1 = document.body.scrollHeight;
		var test2 = document.body.offsetHeight;
		if (test1 > test2) {
			coords[1] = document.body.scrollHeight;
		} else {
			coords[1] = document.body.offsetHeight;
		}
		if (coords[1] < coords[0]) coords[1] = coords[0];
	
		return coords;
	}
	
	function closeBox() {
		var theBody = document.getElementsByTagName('body')[0];
		var theBox = document.getElementById('litebox');
		if (theBox) theBox.style.display = 'none';
		var theShadow = document.getElementById('shadow');
		if (theShadow) theShadow.style.display = 'none';
		theBody.removeChild(theShadow);
	
		selects = document.getElementsByTagName('select');
		for (i = 0; i != selects.length; i++) {
			selects[i].style.visibility = 'visible';
		}
		document.onkeypress = '';
		imgPrev = imgNext = '';
		return false;
	}
	
	function getKey(e) {
		var arrowImg;
	
		if (!e) var e = window.event;
		var keycode = e.keyCode ? e.keyCode : e.which;
	
		switch (keycode) {
			case 27:
			case 32:
				closeBox();
				break;
			case 37:
				arrowImg = imgPrev ? imgPrev : '';
				break;
			case 39:
				arrowImg = imgNext ? imgNext : '';
		}
		if (arrowImg) { closeBox(); showBox(arrowImg); }
		return false;
	}
	
	function initLitebox() {
		if (!document.getElementsByTagName) { return; }
		var anchors = document.getElementsByTagName('a');
	
		for (i=0,len=anchors.length; i<len; i++){
			var anchor = anchors[i];
			if (anchor.getAttribute('href') && (anchor.getAttribute('rel') == 'lightbox')) {
				anchor.onclick = function() { showBox(this); return false; }
			}
		}
		anchor = null;
	}
	
	function addLoadEvent(func) {
		var oldonload = window.onload;
		if (typeof window.onload != 'function') {
			window.onload = func;
		} else {
			window.onload = function() {
				oldonload();
				func();
			}
		}
	}
	
	addLoadEvent(initLitebox);