hs.expanders[this.key] = this;
	if (!hs.allowMultipleInstances) {
		if (hs.expanders[key-1]) hs.expanders[key-1].close();
		if (typeof hs.focusKey != 'undefined' && hs.expanders[hs.focusKey])
			hs.expanders[hs.focusKey].close();	}
	this.overlays = [];

	var pos = hs.position(el);
	
	// store properties of thumbnail
	this.thumbWidth = el.width ? el.width : el.offsetWidth;		
	this.thumbHeight = el.height ? el.height : el.offsetHeight;
	this.thumbLeft = pos.x;
	this.thumbTop = pos.y;
	this.thumbOffsetBorderW = (this.thumb.offsetWidth - this.thumbWidth) / 2;
	this.thumbOffsetBorderH = (this.thumb.offsetHeight - this.thumbHeight) / 2;
	
	// 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.wrapper.onmouseover = function (e) { 
		try { hs.expanders[key].wrapperMouseHandler(e); } catch (e) {} 
	};
	this.wrapper.onmouseout = function (e) { 
		try { hs.expanders[key].wrapperMouseHandler(e); } catch (e) {}
	};
	if (this.contentType == 'image' && this.outlineWhileAnimating == 2)
		this.outlineWhileAnimating = 0;
	// get the outline
	if (hs.pendingOutlines[this.outlineType]) {
		this.connectOutline();
		this[this.contentType +'Create']();
	} else if (!this.outlineType) {
		this[this.contentType +'Create']();
	} else {
		this.displayLoading();
		var exp = this;
		new hs.Outline(this.outlineType, 
			function () { 
				exp.connectOutline();
				exp[exp.contentType +'Create']();
			} 
		);
	}
	return true;};

hs.Expander.prototype = {

connectOutline : function(x, y) {	
	var w = hs.pendingOutlines[this.outlineType];
	this.objOutline = w;
	w.table.style.zIndex = this.wrapper.style.zIndex;
	hs.pendingOutlines[this.outlineType] = null;
},

displayLoading : function() {
	if (this.onLoadStarted || this.loading) return;
		
	this.originalCursor = this.a.style.cursor;
	this.a.style.cursor = 'wait';
	
	this.loading = hs.loading;
	var exp = this;
	this.loading.onclick = function() {
		exp.cancelLoading();
	};
	this.loading.style.top = (this.thumbTop 
		+ (this.thumbHeight - this.loading.offsetHeight) / 2) +'px';
	var exp = this, left = (this.thumbLeft + this.thumbOffsetBorderW 
		+ (this.thumbWidth - this.loading.offsetWidth) / 2) +'px';
	setTimeout(function () { if (exp.loading) exp.loading.style.left = left }, 100); 
},

imageCreate : function() {
	var exp = this;
	
	var img = document.createElement('img');
    this.content = img;
    img.onload = function () {
    	if (hs.expanders[exp.key]) exp.contentLoaded(); 
	};
    if (hs.blockRightClick) img.oncontextmenu = function() { return false; };
    img.className = 'highslide-image';
    img.style.visibility = 'hidden'; // prevent flickering in IE
    img.style.display = 'block';
	img.style.position = 'absolute';
	img.style.maxWidth = 'none';
    img.style.zIndex = 3;
    img.title = hs.restoreTitle;
    if (hs.safari) hs.container.appendChild(img);
    if (hs.ie && hs.flushImgSize) img.src = null;
	img.src = hs.getSrc(this.a);
	
	this.displayLoading();
},

htmlCreate : function () {
	this.tempContainer = hs.createElement('div', { className: this.wrapperClassName },
		{
			padding: '0 '+ hs.marginRight +'px 0 '+ hs.marginLeft +'px',
			visibility: 'hidden'
		}, hs.container
	);
	
	this.content = hs.getCacheBinding(this.a);
	if (!this.content) 
		this.content = hs.getNode(this.contentId);
	if (!this.content) 
		this.content = hs.getSelfRendered();
	this.innerContent = this.content;
	
	if (this.swfObject || this.objectType == 'iframe') this.setObjContainerSize(this.innerContent);
	this.tempContainer.appendChild(this.innerContent); // to get full width
	hs.setStyles (this.innerContent, { position: 'relative', visibility: 'hidden' });
	this.innerContent.className += ' highslide-display-block';
	if (this.width) this.innerContent.style.width = this.width+'px';
	if (this.height) this.innerContent.style.height = this.height+'px';
	if (this.innerContent.offsetWidth < this.minWidth)
		this.innerContent.style.width = this.minWidth +'px';
	
	this.content = hs.createElement(
    	'div',
    	{	className: 'highslide-html' },
		{
			position: 'relative',
			zIndex: 3,
			overflow: 'hidden',
			width: this.thumbWidth +'px',
			height: this.thumbHeight +'px'
		}
	);
    
	if (this.objectType == 'ajax' && !hs.getCacheBinding(this.a)) {
    	var ajax = new hs.Ajax(this.a, this.innerContent);
    	var exp = this;
    	ajax.onLoad = function () {	if (hs.expanders[exp.key]) exp.contentLoaded(); };
    	ajax.onError = function () { location.href = hs.getSrc(this.a); };
    	ajax.run();
	}
    else
    
    if (this.objectType == 'iframe' && this.objectLoadTime == 'before') {
		this.writeExtendedContent();
	}
    else
    	this.contentLoaded();
},

contentLoaded : function() {
	try {	
		if (!this.content) return;
		if (this.onLoadStarted) return; // old Gecko loop
		else this.onLoadStarted = true;
		
			   
		if (this.loading) {
			this.loading.style.left = '-9999px';
			this.loading = null;
			this.a.style.cursor = this.originalCursor || '';
		}
		this.marginBottom = hs.marginBottom;
		if (this.isImage) {	
			this.newWidth = this.content.width;
			this.newHeight = this.content.height;
			this.fullExpandWidth = this.newWidth;
			this.fullExpandHeight = this.newHeight;
			
			this.content.style.width = this.thumbWidth +'px';
			this.content.style.height = this.thumbHeight +'px';
			this.getCaption();
		} else if (this.htmlGetSize) this.htmlGetSize();	
		
		
		this.wrapper.appendChild(this.content);
		this.content.style.position = 'relative'; // Saf
		if (this.caption) this.wrapper.appendChild(this.caption);
		this.wrapper.style.left = this.thumbLeft +'px';
		this.wrapper.style.top = this.thumbTop +'px';
		hs.container.appendChild(this.wrapper);
		
		// correct for borders
		this.offsetBorderW = (this.content.offsetWidth - this.thumbWidth) / 2;
		this.offsetBorderH = (this.content.offsetHeight - this.thumbHeight) / 2;
		var modMarginRight = hs.marginRight + 2 * this.offsetBorderW;
		this.marginBottom += 2 * this.offsetBorderH;
		
		var ratio = this.newWidth / this.newHeight;
		var minWidth = this.allowSizeReduction 
			? this.minWidth : this.newWidth;
		var minHeight = this.allowSizeReduction 
			? this.minHeight : this.newHeight;
		
		var justify = { x: 'auto', y: 'auto' };
		
		var page = hs.getPageSize();
		// justify
		this.x = { 
			min: parseInt(this.thumbLeft) - this.offsetBorderW + this.thumbOffsetBorderW,
			span: this.newWidth,
			minSpan: (this.newWidth < minWidth && !hs.padToMinWidth) 
				? this.newWidth : minWidth,
			marginMin: hs.marginLeft, 
			marginMax: modMarginRight,
			scroll: page.scrollLeft,
			clientSpan: page.width,
			thumbSpan: this.thumbWidth
		};
		var oldRight = this.x.min + parseInt(this.thumbWidth);
		this.x = this.justify(this.x);
		this.y = { 
			min: parseInt(this.thumbTop) - this.offsetBorderH + this.thumbOffsetBorderH,
			span: this.newHeight,
			minSpan: this.newHeight < minHeight ? this.newHeight : minHeight,
			marginMin: hs.marginTop, 
			marginMax: this.marginBottom, 
			scroll: page.scrollTop,
			clientSpan: page.height,
			thumbSpan: this.thumbHeight
		};
		var oldBottom = this.y.min + parseInt(this.thumbHeight);
		this.y = this.justify(this.y);
		if (this.isHtml) this.htmlSizeOperations();
		
		if (this.isImage)
			this.correctRatio(ratio);
		

		var x = this.x;
		var y = this.y;
		
		this.show();
	} catch (e) {
		window.location.href = hs.getSrc(this.a);
	}
},


setObjContainerSize : function(parent, auto) {
	var c = hs.getElementByClass(parent, 'DIV', 'highslide-body');
	
	if (this.objectType == 'iframe') {
		if (this.objectWidth) c.style.width = this.objectWidth +'px';
		if (this.objectHeight) c.style.height = this.objectHeight +'px';
	}
	if (this.swfObject) {
		c.style.width = this.swfObject.attributes.width +'px';
		c.style.height = this.swfObject.attributes.height +'px';
	}
},

writeExtendedContent : function (loadTime) {
	if (this.hasExtendedContent) return;
	var exp = this;
	this.body = hs.getElementByClass(this.innerContent, 'DIV', 'highslide-body');
	if (this.objectType == 'iframe') {
		this.displayLoading();
		this.ruler = hs.clearing.cloneNode(1);
		this.body.appendChild(this.ruler);
		this.newWidth = this.innerContent.offsetWidth;
		if (!this.objectWidth) this.objectWidth = this.ruler.offsetWidth;
		var hDiff = this.innerContent.offsetHeight - this.body.offsetHeight;
		var h = this.objectHeight || (hs.getPageSize()).height - hDiff - hs.marginTop - hs.marginBottom;
		var onload = (hs.ie && this.objectLoadTime == 'before') ? 
			'onload="if(hs.expanders['+ this.key +'])hs.expanders['+ this.key +'].contentLoaded();"' : '';
		var tag = hs.ie ? '<iframe name="hsIframe'+ this.key+ '" '+ onload +'/>' : 'iframe';
		this.iframe = hs.createElement(tag, 
			{ name: 'hsIframe'+ this.key, frameBorder: 0, allowTransparency: true },
			{ width: this.objectWidth +'px', height: h +'px' }, 
			this.body);
		if (this.objectLoadTime == 'before') {
			if (!hs.ie) this.iframe.onload = function () { if (hs.expanders[exp.key]) exp.contentLoaded(); };
		}
		if (hs.safari) this.iframe.src = null;
		this.iframe.src = hs.getSrc(this.a);
		
		if (this.objectLoadTime == 'after') this.correctIframeSize();
		
	} else if (this.swfObject) {	
		this.body.id = this.body.id || 'hs-flash-id-' + this.key;
		this.swfObject.write(this.body.id);	
	}
	this.hasExtendedContent = true;	
},
htmlGetSize : function() {
	if (this.iframe && !this.objectHeight) { // loadtime before
		try {
			var doc = this.iframe.contentDocument || this.iframe.contentWindow.document;
			var clearing = doc.createElement('div');
			clearing.style.clear = 'both';
			doc.body.appendChild(clearing);
			var h = clearing.offsetTop;
			if (hs.ie) h += parseInt(doc.body.currentStyle.marginTop) 
				+ parseInt(doc.body.currentStyle.marginBottom) - 1;		
			this.iframe.style.height = this.body.style.height = h +'px';
		} catch (e) { // other domain
			this.iframe.style.height = '300px';
		}
	}
	this.innerContent.appendChild(hs.clearing);
	if (!this.newWidth) this.newWidth = this.innerContent.offsetWidth;
    this.newHeight = this.innerContent.offsetHeight;
    this.innerContent.removeChild(hs.clearing);
    if (hs.ie && this.newHeight > parseInt(this.innerContent.currentStyle.height)) { // ie css bug
		this.newHeight = parseInt(this.innerContent.currentStyle.height);
	}
},

correctIframeSize : function () {
	var wDiff = this.innerContent.offsetWidth - this.ruler.offsetWidth;
	if (wDiff < 0) wDiff = 0;
	
	var hDiff = this.innerContent.offsetHeight - this.body.offsetHeight;
	
    hs.setStyles(this.iframe, { width: (this.x.span - wDiff) +'px', 
		height: (this.y.span - hDiff) +'px' });
    hs.setStyles(this.body, { width: this.iframe.style.width, 
    	height: this.iframe.style.height });
    	
    this.scrollingContent = this.iframe;
    this.scrollerDiv = this.scrollingContent;
},
htmlSizeOperations : function () {
	
	this.setObjContainerSize(this.innerContent);
	
	
	if (this.swfObject && this.objectLoadTime == 'before') this.writeExtendedContent();	
	
	
    // handle minimum size
    if (this.x.span < this.newWidth && !this.allowWidthReduction) this.x.span = this.newWidth;
    if (this.y.span < this.newHeight && !this.allowHeightReduction) this.y.span = this.newHeight;
    this.scrollerDiv = this.innerContent;
    this.mediumContent = hs.createElement('div', null, 
    	{ 
    		width: this.x.span +'px',
    		position: 'relative',
    		left: (this.x.min - this.thumbLeft) +'px',
    		top: (this.y.min - this.thumbTop) +'px'
    	}, this.content, true);
	
    this.mediumContent.appendChild(this.innerContent);
    hs.container.removeChild(this.tempContainer);
    hs.setStyles(this.innerContent, { border: 'none', width: 'auto', height: 'auto' });
    
    var node = hs.getElementByClass(this.innerContent, 'DIV', 'highslide-body');
    if (node && !this.swfObject && this.objectType != 'iframe') {    
    	var cNode = node; // wrap to get true size
    	node = hs.createElement(cNode.nodeName, null, {overflow: 'hidden'}, null, true);
    	cNode.parentNode.insertBefore(node, cNode);
    	node.appendChild(hs.clearing); // IE6
    	node.appendChild(cNode);
    	
    	var wDiff = this.innerContent.offsetWidth - node.offsetWidth;
    	var hDiff = this.innerContent.offsetHeight - node.offsetHeight;
    	node.removeChild(hs.clearing);
    	
    	var kdeBugCorr = hs.safari || navigator.vendor == 'KDE' ? 1 : 0; // KDE repainting bug
    	hs.setStyles(node, { 
    			width: (this.x.span - wDiff - kdeBugCorr) +'px', 
    			height: (this.y.span - hDiff) +'px',
    			overflow: 'auto', 
    			position: 'relative' 
    		} 
    	);
		if (kdeBugCorr && cNode.offsetHeight > node.offsetHeight)	{
    		node.style.width = (parseInt(node.style.width) + kdeBugCorr) + 'px';
		}
    	this.scrollingContent = node;
    	this.scrollerDiv = this.scrollingContent;
    	
	}
    if (this.iframe && this.objectLoadTime == 'before') this.correctIframeSize();
    if (!this.scrollingContent && this.y.span < this.mediumContent.offsetHeight) this.scrollerDiv = this.content;
	
	if (this.scrollerDiv == this.content && !this.allowWidthReduction && this.objectType != 'iframe') {
		this.x.span += 17; // room for scrollbars
	}
	if (this.scrollerDiv && this.scrollerDiv.offsetHeight > this.scrollerDiv.parentNode.offsetHeight) {
		setTimeout("try { hs.expanders["+ this.key +"].scrollerDiv.style.overflow = 'auto'; } catch(e) {}",
			 hs.expandDuration);
	}
},

justify : function (p) {
	
	var tgt, dim = p == this.x ? 'x' : 'y';
	
	
		var hasMovedMin = false;
		
		var allowReduce = true;
		
		// calculate p.min
		p.min = Math.round(p.min - ((p.span - p.thumbSpan) / 2)); // auto
		
		if (p.min < p.scroll + p.marginMin) {