/******************************************************************************
Name:    Highslide JS
Version: 4.0.7 (Oct 9 2008)
Config:  default -outlines -overlays -navigation -dragging -autosize -multiple
Author:  Torstein Hønsi
Support: http://highslide.com/support

Licence:
Highslide JS is licensed under a Creative Commons Attribution-NonCommercial 2.5
License (http://creativecommons.org/licenses/by-nc/2.5/).

You are free:
	* to copy, distribute, display, and perform the work
	* to make derivative works

Under the following conditions:
	* Attribution. You must attribute the work in the manner  specified by  the
	  author or licensor.
	* Noncommercial. You may not use this work for commercial purposes.

* For  any  reuse  or  distribution, you  must make clear to others the license
  terms of this work.
* Any  of  these  conditions  can  be  waived  if  you  get permission from the 
  copyright holder.

Your fair use and other rights are in no way affected by the above.
******************************************************************************/

var hs = {
// Language strings
lang : {
	loadingText : 'Loading...',
	loadingTitle : 'Click to cancel',
	restoreTitle : 'Click to close image'
},
// See http://highslide.com/ref for examples of settings  
graphicsDir : 'highslide/graphics/',
restoreCursor : 'zoomout.cur', // necessary for preload
expandSteps : 10, // number of steps in zoom. Each step lasts for duration/step milliseconds.
expandDuration : 250, // milliseconds
restoreSteps : 10,
restoreDuration : 250,
marginLeft : 15,
marginRight : 15,
marginTop : 15,
marginBottom : 15,
zIndexCounter : 1001, // adjust to other absolutely positioned elements
loadingOpacity : 0.75,
numberOfImagesToPreload : 5,

minWidth: 200,
minHeight: 200,
wrapperClassName : 'highslide-wrapper', // for enhanced css-control
// END OF YOUR SETTINGS


// declare internal properties
preloadTheseImages : [],
continuePreloading: true,
expanders : [],
overrides : [
	
	'wrapperClassName',
	'minWidth',
	'minHeight',
	'maxWidth',
	'maxHeight',
	'slideshowGroup',
	'easing',
	'easingClose',
	'fadeInOut',
	'src'
],
clones : {},
ie : (document.all && !window.opera),
safari : /Safari/.test(navigator.userAgent),
geckoMac : /Macintosh.+rv:1\.[0-8].+Gecko/.test(navigator.userAgent),

$ : function (id) {
	return document.getElementById(id);
},

push : function (arr, val) {
	arr[arr.length] = val;
},

createElement : function (tag, attribs, styles, parent, nopad) {
	var el = document.createElement(tag);
	if (attribs) hs.setAttribs(el, attribs);
	if (nopad) hs.setStyles(el, {padding: 0, border: 'none', margin: 0});
	if (styles) hs.setStyles(el, styles);
	if (parent) parent.appendChild(el);	
	return el;
},

setAttribs : function (el, attribs) {
	for (var x in attribs) el[x] = attribs[x];
},

setStyles : function (el, styles) {
	for (var x in styles) {
		if (hs.ie && x == 'opacity') {
			if (styles[x] > 0.99) el.style.removeAttribute('filter');
			else el.style.filter = 'alpha(opacity='+ (styles[x] * 100) +')';
		}
		else el.style[x] = styles[x];
	}
},

ieVersion : function () {
	var arr = navigator.appVersion.split("MSIE");
	return arr[1] ? parseFloat(arr[1]) : null;
},

getPageSize : function () {
	var d = document, w = window, iebody = d.compatMode && d.compatMode != 'BackCompat' 
		? d.documentElement : d.body;
	
	var width = hs.ie ? iebody.clientWidth : 
			(d.documentElement.clientWidth || self.innerWidth),
		height = hs.ie ? iebody.clientHeight : self.innerHeight;
	
	return {
		width: width,
		height: height,		
		scrollLeft: hs.ie ? iebody.scrollLeft : pageXOffset,
		scrollTop: hs.ie ? iebody.scrollTop : pageYOffset
	}
},

getPosition : function(el)	{
	var p = { x: el.offsetLeft, y: el.offsetTop };
	while (el.offsetParent)	{
		el = el.offsetParent;
		p.x += el.offsetLeft;
		p.y += el.offsetTop;
		if (el != document.body && el != document.documentElement) {
			p.x -= el.scrollLeft;
			p.y -= el.scrollTop;
		}
	}
	return p;
},
expand : function(a, params, custom, type) {
	if (!a) a = hs.createElement('a', null, { display: 'none' }, hs.container);
	if (typeof a.getParams == 'function') return params;	
	try {	
		new hs.Expander(a, params, custom);
		return false;
	} catch (e) { return true; }
},


getParam : function (a, param) {
	a.getParams = a.onclick;
	var p = a.getParams ? a.getParams() : null;
	a.getParams = null;
	
	return (p && typeof p[param] != 'undefined') ? p[param] : 
		(typeof hs[param] != 'undefined' ? hs[param] : null);
},

getSrc : function (a) {
	var src = hs.getParam(a, 'src');
	if (src) return src;
	return a.href;
},

discardElement : function(d) {
	hs.garbageBin.appendChild(d);
	hs.garbageBin.innerHTML = '';
},



getWrapperKey : function (element, expOnly) {
	var el, re = /^highslide-wrapper-([0-9]+)$/;
	// 1. look in open expanders
	el = element;
	while (el.parentNode)	{
		if (el.id && re.test(el.id)) return el.id.replace(re, "$1");
		el = el.parentNode;
	}
	// 2. look in thumbnail
	if (!expOnly) {
		el = element;
		while (el.parentNode)	{
			if (el.tagName && hs.isHsAnchor(el)) {
				for (var key = 0; key < hs.expanders.length; key++) {
					var exp = hs.expanders[key];
					if (exp && exp.a == el) return key;
				}
			}
			el = el.parentNode;
		}
	}
	return null; 
},

getExpander : function (el, expOnly) {
	if (typeof el == 'undefined') return hs.expanders[hs.focusKey] || null;
	if (typeof el == 'number') return hs.expanders[el] || null;
	if (typeof el == 'string') el = hs.$(el);
	return hs.expanders[hs.getWrapperKey(el, expOnly)] || null;
},

isHsAnchor : function (a) {
	return (a.onclick && a.onclick.toString().replace(/\s/g, ' ').match(/hs.(htmlE|e)xpand/));
},

addEventListener : function (el, event, func) {
	try {
		el.addEventListener(event, func, false);
	} catch (e) {
		try {
			el.detachEvent('on'+ event, func);
			el.attachEvent('on'+ event, func);
		} catch (e) {
			el['on'+ event] = func;
		}
	} 
},

removeEventListener : function (el, event, func) {
	try {
		el.removeEventListener(event, func, false);
	} catch (e) {
		try {
			el.detachEvent('on'+ event, func);
		} catch (e) {
			el['on'+ event] = null;
		}
	}
},

preloadFullImage : function (i) {
	if (hs.continuePreloading && hs.preloadTheseImages[i] && hs.preloadTheseImages[i] != 'undefined') {
		var img = document.createElement('img');
		img.onload = function() { 
			img = null;
			hs.preloadFullImage(i + 1);
		};
		img.src = hs.preloadTheseImages[i];
	}
},
preloadImages : function (number) {
	if (number && typeof number != 'object') hs.numberOfImagesToPreload = number;
	
	var arr = hs.getAnchors();
	for (var i = 0; i < arr.images.length && i < hs.numberOfImagesToPreload; i++) {
		hs.push(hs.preloadTheseImages, hs.getSrc(arr.images[i]));
	}
	
	hs.preloadFullImage(0);
	
	// preload cursor
	var cur = hs.createElement('img', { src: hs.graphicsDir + hs.restoreCursor });
},


init : function () {
	if (!hs.container) {
		hs.container = hs.createElement('div', {
				className: 'highslide-container'
			}, {
				position: 'absolute', 
				left: 0, 
				top: 0, 
				width: '100%', 
				zIndex: hs.zIndexCounter,
				direction: 'ltr'
			}, 
			document.body,
			true
		);
		hs.loading = hs.createElement('a', {
				className: 'highslide-loading',
				title: hs.lang.loadingTitle,
				innerHTML: hs.lang.loadingText,
				href: 'javascript:;'
			}, {
				position: 'absolute',
				top: '-9999px',
				opacity: hs.loadingOpacity,
				zIndex: 1
			}, hs.container
		);
		hs.garbageBin = hs.createElement('div', null, { display: 'none' }, hs.container);
		
		// http://www.robertpenner.com/easing/ 
		Math.linearTween = function (t, b, c, d) {
			return c*t/d + b;
		};
		Math.easeInQuad = function (t, b, c, d) {
			return c*(t/=d)*t + b;
		};
		for (var x in hs.langDefaults) {
			if (typeof hs[x] != 'undefined') hs.lang[x] = hs[x];
			else if (typeof hs.lang[x] == 'undefined' && typeof hs.langDefaults[x] != 'undefined') 
				hs.lang[x] = hs.langDefaults[x];
		}
	}
},
domReady : function() {
	hs.isDomReady = true;
	if (hs.onDomReady) hs.onDomReady();
},

updateAnchors : function() {
	var els = document.getElementsByTagName('*'), all = [], images = [],groups = {}, re;
	
	for (var i = 0; i < els.length; i++) {
		re = hs.isHsAnchor(els[i]);
		if (re) {
			hs.push(all, els[i]);
			if (re[0] == 'hs.expand') hs.push(images, els[i]);
			var g = hs.getParam(els[i], 'slideshowGroup') || 'none';
			if (!groups[g]) groups[g] = [];
			hs.push(groups[g], els[i]);
		}
	}
	hs.anchors = { all: all, groups: groups, images: images };
	
	return hs.anchors;
},

getAnchors : function() {
	return hs.anchors || hs.updateAnchors();
},


close : function(el) {
	var exp = hs.getExpander(el);
	if (exp) exp.close();
	return false;
}
}; // end hs object



//-----------------------------------------------------------------------------
// The expander object
hs.Expander = function(a, params, custom, contentType) {
	if (document.readyState && hs.ie && !hs.isDomReady) {
		hs.onDomReady = function() {
			new hs.Expander(a, params, custom, contentType);
		};
		return;
	} 
	this.a = a;
	this.custom = custom;
	this.contentType = contentType || 'image';
	this.isImage = !this.isHtml;
	
	hs.continuePreloading = false;
	hs.init();
	var key = this.key = hs.expanders.length;
	// override inline parameters
	for (var i = 0; i < hs.overrides.length; i++) {
		var name = hs.overrides[i];
		this[name] = params && typeof params[name] != 'undefined' ?
			params[name] : hs[name];
	}
	if (!this.src) this.src = a.href;
	// get thumb
	var el = (params && params.thumbnailId) ? hs.$(params.thumbnailId) : a;
	el = this.thumb = el.getElementsByTagName('img')[0] || el;
	this.thumbsUserSetId = el.id || a.id;
	
	// check if already open
	for (var i = 0; i < hs.expanders.length; i++) {
		if (hs.expanders[i] && hs.expanders[i].a == a) {
			hs.expanders[i].focus();
			return false;
		}
	}	
	// cancel other
	for (var i = 0; i < hs.expanders.length; i++) {
		if (hs.expanders[i] && hs.expanders[i].thumb != el && !hs.expanders[i].onLoadStarted) {
			hs.expanders[i].cancelLoading();
		}
	}
	hs.expanders[this.key] = this;
		if (hs.expanders[key-1]) hs.expanders[key-1].close();
		if (typeof hs.focusKey != 'undefined' && hs.expanders[hs.focusKey])
			hs.expanders[hs.focusKey].close();
	
	var pos = hs.getPosition(el);
	
	// initiate metrics
	var x = this.x = {};
	x.t = el.width ? parseInt(el.width) : el.offsetWidth;
	x.tpos = pos.x;
	x.tb = (el.offsetWidth - x.t) / 2;
	var y = this.y = {};
	y.t = el.height ? parseInt(el.height) : el.offsetHeight;
	y.tpos = pos.y;
	y.tb = (el.offsetHeight - y.t) / 2;
	hs.page = hs.getPageSize();		
	if (x.t == 0 && x.tpos == 0) {
		x.tpos = (hs.page.width / 2) + hs.page.scrollLeft;
		y.tpos = (hs.page.height / 2) + hs.page.scrollTop;
	};
	
	// instanciate the wrapper
	this.wrapper = hs.createElement(
		'div', {
			id: 'highslide-wrapper-'+ this.key,
			className: this.wrapperClassName
		}, {
			visibility: 'hidden',
			position: 'absolute',
			zIndex: hs.zIndexCounter++
		}, null, true );
		this[this.contentType +'Create']();
	return true;
};

hs.Expander.prototype = {

showLoading : function() {
	if (this.onLoadStarted || this.loading) return;
	
	this.loading = hs.loading;
	var exp = this;
	this.loading.onclick = function() {
		exp.cancelLoading();
	};
	var exp = this, 
		l = (this.x.tpos + this.x.tb 
			+ (this.x.t - this.loading.offsetWidth) / 2) +'px',
		t = (this.y.tpos 
			+ (this.y.t - this.loading.offsetHeight) / 2) +'px';
	setTimeout(function () { 
		if (exp.loading) hs.setStyles(exp.loading, { left: l, top: t, zIndex: hs.zIndexCounter++ })}
	, 100);
},

imageCreate : function() {
	var exp = this;
	
	var img = document.createElement('img');
    this.content = img;
    img.onload = function () {
    	if (hs.expanders[exp.key]) exp.contentLoaded(); 
	};
    img.onclick = function () { try { 
    	exp.close();
    } catch (e) {} };
    if (hs.blockRightClick) img.oncontextmenu = function() { return false; };
    img.className = 'highslide-image';
    hs.setStyles(img, {
    	visibility: 'hidden',
    	display: 'block',
    	position: 'absolute',
		maxWidth: '9999px',
		zIndex: 3
	});
    img.title = hs.lang.restoreTitle;
    if (hs.safari) hs.container.appendChild(img);
    if (hs.ie && hs.flushImgSize) img.src = null;
	img.src = this.src;
	
	this.showLoading();
},

contentLoaded : function() {
	try {	
		if (!this.content) return;
		this.content.onload = null;
		if (this.onLoadStarted) return;
		else this.onLoadStarted = true;
		
		var x = this.x, y = this.y;
		
		if (this.loading) {
			hs.setStyles(this.loading, { top: '-9999px' });
			this.loading = null;
		}
		this.marginBottom = hs.marginBottom;	
			x.full = this.content.width;
			y.full = this.content.height;
			
			hs.setStyles(this.content, {
				width: this.x.t +'px',
				height: this.y.t +'px'
			});
		
		this.wrapper.appendChild(this.content);
		hs.setStyles (this.wrapper, {
			left: this.x.tpos +'px',
			top: this.y.tpos +'px'
		});
		hs.container.appendChild(this.wrapper);
		
		// correct for borders
		x.cb = (this.content.offsetWidth - this.x.t) / 2;
		y.cb = (this.content.offsetHeight - this.y.t) / 2;
		var modMarginRight = hs.marginRight + 2 * x.cb;
		this.marginBottom += 2 * y.cb;
		
		var ratio = x.full / y.full;
		var minWidth = x.full;
		var minHeight = y.full;
		
		var justify = { x: 'auto', y: 'auto' };
		
		// justify
		x.min = x.tpos - x.cb + x.tb;
		x.span = Math.min(x.full, this.maxWidth || x.full);
		x.minSpan = Math.min(x.full, minWidth);
		x.marginMin = hs.marginLeft; 
		x.marginMax = modMarginRight;
		x.scroll = hs.page.scrollLeft;
		x.clientSpan = hs.page.width;
		this.justify(x);
		
		y.min = y.tpos - y.cb + y.tb;
		y.span = Math.min(y.full, this.maxHeight || y.full);
		y.minSpan = Math.min(y.full, minHeight);
		y.marginMin = hs.marginTop; 
		y.marginMax = this.marginBottom; 
		y.scroll = hs.page.scrollTop;
		y.clientSpan = hs.page.height;
		this.justify(y);
		this.show();
		
	} catch (e) {
		window.location.href = this.src;
	}
},

justify : function (p, moveOnly) {
	var tgtArr, tgt = p.target, dim = p == this.x ? 'x' : 'y';
	
		var hasMovedMin = false;
			p.min = Math.round(p.min - ((p.span 
			 - p.t) / 2));
		if (p.min < p.scroll + p.marginMin) {
			p.min = p.scroll + p.marginMin;
			hasMovedMin = true;		
		}
		if (p.min + p.span > p.scroll + p.clientSpan - p.marginMax) {
			if (!moveOnly && hasMovedMin) {
			} else if (p.span < p.clientSpan - p.marginMin - p.marginMax) {
				p.min = p.scroll + p.clientSpan - p.span - p.marginMax
					;
			} else { // image larger than viewport
				p.min = p.scroll + p.marginMin;
			}			
		}
		
	
		
	if (p.min < p.marginMin) {
		var tmpMin = p.min;
		p.min = p.marginMin; 
		
	}
},

show : function () {
	
	// Selectbox bug
	var imgPos = {
		x: this.x.min - 20, 
		y: this.y.min - 20, 
		w: this.x.span + 40, 
		h: this.y.span + 40
	};
	hs.hideSelects = (hs.ie && hs.ieVersion() < 7);
	if (hs.hideSelects) this.showHideElements('SELECT', 'hidden', imgPos);
	// Iframes bug
	hs.hideIframes = ((window.opera && navigator.appVersion < 9) || navigator.vendor == 'KDE' 
		|| (hs.ie && hs.ieVersion() < 5.5));
	if (hs.hideIframes) this.showHideElements('IFRAME', 'hidden', imgPos);
	// Scrollbars bug
	if (hs.geckoMac) this.showHideElements('*', 'hidden', imgPos); 
	
		
	// Apply size change
	this.changeSize(
		1,
		{ 
			xmin: this.x.tpos + this.x.tb - this.x.cb,
			ymin: this.y.tpos + this.y.tb - this.y.cb,
			xspan: this.x.t,
			yspan: this.y.t
		},
		{
			xmin: this.x.min,
			ymin: this.y.min,
			xspan: this.x.span,
			yspan: this.y.span
		},
		hs.expandDuration,
		hs.expandSteps
	);
},

changeSize : function(up, from, to, dur, steps) {
	if (this.fadeInOut) {
		from.op = up ? 0 : 1;
		to.op = up;
	}
	var t,
	exp = this,
	easing = Math[this.easing] || Math.easeInQuad;
	if (!up) easing = Math[this.easingClose] || easing;
	
	for (var i = 1; i <= steps; i++) {
		t = Math.round(i * (dur / steps));
		
		(function(){
			var pI = i, size = {};
			
			for (var x in from) {
				size[x] = easing(t, from[x], to[x] - from[x], dur);
				if (!/^op$/.test(x)) size[x] = Math.round(size[x]);
			}
			setTimeout ( function() {
				if (up && pI == 1) {
					exp.content.style.visibility = 'visible';
					exp.a.className += ' highslide-active-anchor';
				}
				exp.setSize(size);
			}, t);				
		})();
	}
	
	if (up) {
		setTimeout(function() {
			exp.afterExpand();
		}, t + 50);
	}
	else setTimeout(function() { exp.afterClose(); }, t);
},

setSize : function (to) {
	try {		
		if (to.op) hs.setStyles(this.wrapper, { opacity: to.op });
		hs.setStyles ( this.wrapper, {
			width : (to.xspan +
				2 * this.x.cb) +'px',
			height : (to.yspan +
				2 * this.y.cb) +'px',
			left: to.xmin +'px',
			top: to.ymin +'px'
		});
		hs.setStyles(this.content, {
			width: to.xspan +'px',
			height: to.yspan +'px'
		});
			
		this.wrapper.style.visibility = 'visible';
		
	} catch (e) {
		window.location.href = this.src;	
	}
},


afterExpand : function() {
	this.isExpanded = true;	
	this.focus();
	
},



preloadNext : function() {
	var next = this.getAdjacentAnchor(1);
	if (next && next.onclick.toString().match(/hs\.expand/)) 
		var img = hs.createElement('img', { src: hs.getSrc(next) });
},


getAdjacentAnchor : function(op) {
	var current = this.getAnchorIndex(), as = hs.anchors.groups[this.slideshowGroup || 'none'];
	
	/*< ? if ($cfg->slideshow) : ?>s*/
	if (!as[current + op] && this.slideshow && this.slideshow.repeat) {
		if (op == 1) return as[0];
		else if (op == -1) return as[as.length-1];
	}
	/*< ? endif ?>s*/
	return as[current + op] || null;
},

getAnchorIndex : function() {
	var arr = hs.anchors.groups[this.slideshowGroup || 'none'];
	for (var i = 0; i < arr.length; i++) {
		if (arr[i] == this.a) return i; 
	}
	return null;
},


cancelLoading : function() {	
	hs.expanders[this.key] = null;
	if (this.loading) hs.loading.style.left = '-9999px';
},


showHideElements : function (tagName, visibility, imgPos) {
	var els = document.getElementsByTagName(tagName);
	var prop = tagName == '*' ? 'overflow' : 'visibility';
	for (var i = 0; i < els.length; i++) {
		if (prop == 'visibility' || (document.defaultView.getComputedStyle(
				els[i], "").getPropertyValue('overflow') == 'auto'
				|| els[i].getAttribute('hidden-by') != null)) {
			var hiddenBy = els[i].getAttribute('hidden-by');
			if (visibility == 'visible' && hiddenBy) {
				hiddenBy = hiddenBy.replace('['+ this.key +']', '');
				els[i].setAttribute('hidden-by', hiddenBy);
				if (!hiddenBy) els[i].style[prop] = els[i].origProp;
			} else if (visibility == 'hidden') { // hide if behind
				var elPos = hs.getPosition(els[i]);
				elPos.w = els[i].offsetWidth;
				elPos.h = els[i].offsetHeight;
			
				
					var clearsX = (elPos.x + elPos.w < imgPos.x || elPos.x > imgPos.x + imgPos.w);
					var clearsY = (elPos.y + elPos.h < imgPos.y || elPos.y > imgPos.y + imgPos.h);
				var wrapperKey = hs.getWrapperKey(els[i]);
				if (!clearsX && !clearsY && wrapperKey != this.key) { // element falls behind image
					if (!hiddenBy) {
						els[i].setAttribute('hidden-by', '['+ this.key +']');
						els[i].origProp = els[i].style[prop];
						els[i].style[prop] = 'hidden';
					} else if (!hiddenBy.match('['+ this.key +']')) {
						els[i].setAttribute('hidden-by', hiddenBy + '['+ this.key +']');
					}
				} else if (hiddenBy == '['+ this.key +']' || hs.focusKey == wrapperKey) { // on move
					els[i].setAttribute('hidden-by', '');
					els[i].style[prop] = els[i].origProp || '';
				} else if (hiddenBy && hiddenBy.match('['+ this.key +']')) {
					els[i].setAttribute('hidden-by', hiddenBy.replace('['+ this.key +']', ''));
				}
						
			}
		}
	}
},

focus : function() {
	this.wrapper.style.zIndex = hs.zIndexCounter++;
		this.content.title = hs.lang.restoreTitle;
		
		hs.styleRestoreCursor = window.opera ? 'pointer' : 'url('+ hs.graphicsDir + hs.restoreCursor +'), pointer';
		if (hs.ie && hs.ieVersion() < 6) hs.styleRestoreCursor = 'hand';
		this.content.style.cursor = hs.styleRestoreCursor;
		
	hs.focusKey = this.key;	
},

close : function() {
	if (this.isClosing || !this.isExpanded
		) return;
	this.isClosing = true;
	
	try {
		this.content.style.cursor = 'default';
		this.changeSize(
			0, {
				xmin: this.x.min,
				ymin: this.y.min,
				xspan: this.x.span,
				yspan: parseInt(this.content.style.height)
			}, {
				xmin: this.x.tpos - this.x.cb + this.x.tb,
				ymin: this.y.tpos - this.y.cb + this.y.tb,
				xspan: this.x.t,
				yspan: this.y.t
			},
			hs.restoreDuration,
			hs.restoreSteps
		);
		
	} catch (e) { this.afterClose(); } 
},



afterClose : function () {
	this.a.className = this.a.className.replace('highslide-active-anchor', '');
	
	if (hs.hideSelects) this.showHideElements('SELECT', 'visible');
	if (hs.hideIframes) this.showHideElements('IFRAME', 'visible');
	if (hs.geckoMac) this.showHideElements('*', 'visible');
	
		hs.discardElement(this.wrapper);
	hs.expanders[this.key] = null;
}

};
if (document.readyState && hs.ie) {
	(function () {
		try {
			document.documentElement.doScroll('left');
		} catch (e) {
			setTimeout(arguments.callee, 50);
			return;
		}
		hs.domReady();
	})();
}
hs.langDefaults = hs.lang;
// history
var HsExpander = hs.Expander;

// set handlers
hs.addEventListener(window, 'load', hs.preloadImages);