highslide.js

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		}
	);
	this.createOverlay(credits, 'top left');
};

HsExpander.prototype.writeCaption = function() {
	try {
		this.wrapper.style.width = this.wrapper.offsetWidth +'px';	
		this.caption.style.visibility = 'hidden';
		this.caption.style.position = 'relative';
		if (hs.ie) this.caption.style.zoom = 1;  
		this.caption.className += ' highslide-display-block'; // have to use className due to Opera
		
		var capHeight = this.caption.offsetHeight;
		var slideHeight = (capHeight < this.content.height) ? capHeight : this.content.height;
		this.caption.style.marginTop = '-'+ slideHeight +'px';
		
		this.caption.style.zIndex = 2;
		
		var step = 1;
		if (slideHeight > 400) step = 4;
		else if (slideHeight > 200) step = 2;
		else if (slideHeight > 100) step = 1;
		if (hs.captionSlideSpeed) step = step * hs.captionSlideSpeed;
		else step = slideHeight;
		

		setTimeout("if (hs.expanders["+ this.key +"] && hs.expanders["+ this.key +"].caption) "
				+ "hs.expanders["+ this.key +"].caption.style.visibility = 'visible'", 10); // flickering in Gecko
		var t = 0;
		
		for (marginTop = -slideHeight; marginTop <= 0; marginTop += step, t += 10) {
			var eval = "if (hs.expanders["+ this.key +"] && hs.expanders["+ this.key +"].caption) { "
				+ "hs.expanders["+ this.key +"].caption.style.marginTop = '"+ marginTop +"px';";
			if (hs.slideInOutline && marginTop >= 0) eval += 'hs.expanders['+ this.key +'].writeOutline();';
			else if (!hs.slideInOutline) eval += 'hs.expanders['+ this.key +'].repositionOutline(0);';
			eval += "}";
			
			setTimeout (eval, t);
		}
		
	} catch (e) {}	
};

HsExpander.prototype.writeOutline = function() { 
	if (!this.outlineType) {
		this.onDisplayFinished();
		return;	
	}
	this.outline = new Array();
	var v = hs.ieVersion();
	
	hs.hasAlphaImageLoader = hs.ie && v >= 5.5 && v < 7;
	hs.hasIe7Bug = hs.ie && v == 7; // bug: png breaks when filters applied
	hs.hasPngSupport = !hs.ie;
	this.preloadOutlineElement(1); // start recursive process
};

HsExpander.prototype.preloadOutlineElement = function(i) {
	if (!hs.hasAlphaImageLoader && !hs.hasPngSupport && !hs.hasIe7Bug) return;
	
	if (this.outline[i] && this.outline[i].onload) { // Gecko multiple onloads bug
		this.outline[i].onload = null;
		return;
	}
	
	var src = hs.graphicsDir + "outlines/"+ this.outlineType +"/"+ i +".png";
	
	if (hs.hasAlphaImageLoader) {
		
		this.outline[i] = hs.createElement('div',
			null,
			{
				filter: "progid:DXImageTransform.Microsoft.AlphaImageLoader("
					+ "enabled=true, sizingMethod=scale src='"+ src + "') "
			}
		);
	} else if (hs.hasIe7Bug) {
		this.outline[i] = hs.createElement('div',
			null,
			{
				background: 'url('+ src +')'
			}
		);
	}
		
	var img = document.createElement('img'); // for onload trigger
	if (hs.hasPngSupport) {
		this.outline[i] = img;
	}
	
	// common properties
	this.outline[i].style.position = 'absolute';
	var dim = (i % 2 == 1) ? 10 : 20;
	this.outline[i].style.height = dim +'px';
	this.outline[i].style.width = dim +'px';	
	if (hs.ie) {
		this.outline[i].style.lineHeight = dim +'px';
		this.outline[i].style.fontSize = 0;
	}
	
	if (hs.slideInOutline) {
		var pThis = this;
		if (i < 8) img.onload = function() { pThis.preloadOutlineElement(i + 1); };				
		else img.onload = function() { pThis.displayOutline(); };
	} else {
		this.wrapper.appendChild(this.outline[i]);
		if (i < 8) this.preloadOutlineElement(i + 1);				
		else this.repositionOutline(0);
	}
	
	if (hs.safari) {
		this.outline[i].style.left = '10px';
		this.outline[i].style.top = '10px';
		hs.container.appendChild(img);
	}
	img.src = src;
};

HsExpander.prototype.displayOutline = function() {
	this.repositionOutline(12);
	for (i = 1; i <= 8; i++) {
		this.wrapper.appendChild(this.outline[i]);
	}
	this.hasOutline = true;

	for (i = 10, t = 0; i >= 0; i--, t += 50) {
		setTimeout(
			'if (hs.expanders['+ this.key +']) hs.expanders['+ this.key +'].repositionOutline('+ i +')',
			t
		);
	}
};

HsExpander.prototype.repositionOutline = function(offset) {
	if (this.isClosing) return;
	
	var w = this.wrapper.offsetWidth;
	var h = this.wrapper.offsetHeight;

	var fix = Array (
		Array (Array (1, 5), 'width', w - (2 * offset) - 20),
		Array (Array (1, 5), 'left', 10 + offset),
		Array (Array (1, 2, 8), 'top', -10 + offset),
		Array (Array (2, 4), 'left', w - 10 - offset),
		Array (Array (3, 3), 'left', w - offset),
		Array (Array (3, 7), 'top', 10 + offset),
		Array (Array (3, 7), 'height', h - (2 * offset) - 20),
		Array (Array (4, 6), 'top', h - 10 - offset),
		Array (Array (5, 5), 'top', h - offset),
		Array (Array (6, 7, 8), 'left', -10 + offset)
	);
	// strange khtml bug causes glitch in outline:
	if (navigator.vendor == 'KDE') {
		fix.push(Array(1, 5), 'height', (offset % 2) + 10);
	}
	for (i = 0; i < fix.length; i++) {
		for (j = 0; j < fix[i][0].length; j++) {
			this.outline[fix[i][0][j]].style[fix[i][1]] = fix[i][2] +'px';
		}
	}
	
	if (offset == 0) this.onDisplayFinished();
};

HsExpander.prototype.showHideElements = function (tagName, visibility, imgPos) {
	var els = document.getElementsByTagName(tagName);
	if (els) {			
		for (i = 0; i < els.length; i++) {
			if (els[i].nodeName == tagName) {  
				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.visibility = 'visible';				
					
				} else if (visibility == 'hidden') { // hide if behind
					var elPos = hs.position(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 +']');
						} else if (!hiddenBy.match('['+ this.key +']')) {
							els[i].setAttribute('hidden-by', hiddenBy + '['+ this.key +']');							
						}
						els[i].style.visibility = 'hidden';	  
					} else if (hiddenBy == '['+ this.key +']' || hs.focusKey == wrapperKey) { // on move
						els[i].setAttribute('hidden-by', '');
						els[i].style.visibility = 'visible';
					} else if (hiddenBy && hiddenBy.match('['+ this.key +']')) {
						els[i].setAttribute('hidden-by', hiddenBy.replace('['+ this.key +']', ''));
					}
				}   
			}
		}
	}
};

HsExpander.prototype.focus = function() {
	// blur others
	for (i = 0; i < hs.expanders.length; i++) {
		if (hs.expanders[i] && i == hs.focusKey) {
			var blurExp = hs.expanders[i];
			blurExp.content.className += ' highslide-'+ blurExp.contentType +'-blur';
			if (blurExp.caption) {
				blurExp.caption.className += ' highslide-caption-blur';
			}
			if (blurExp.isImage) {
				blurExp.content.style.cursor = hs.ie ? 'hand' : 'pointer';
				blurExp.content.title = hs.focusTitle;	
			}
		}
	}
	
	// focus this
	this.wrapper.style.zIndex = hs.zIndexCounter++;
	
	this.content.className = 'highslide-'+ this.contentType;
	if (this.caption) {
		this.caption.className = this.caption.className.replace(' highslide-caption-blur', '');
	}
	
	if (this.isImage) {
		this.content.title = hs.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;
	hs.addEventListener(document, 'keydown', hs.keyHandler);
};

HsExpander.prototype.doClose = function() {
	hs.removeEventListener(document, 'keydown', hs.keyHandler);
	try {
		if (!hs.expanders[this.key]) return;
		var exp = hs.expanders[this.key];

		this.isClosing = true;
		
		// remove children
		var n = this.wrapper.childNodes.length;
		for (i = n - 1; i > 0 ; i--) {
			var child = this.wrapper.childNodes[i];
			if (child != this.content) {
				this.wrapper.removeChild(this.wrapper.childNodes[i]);
			}
		}
		
		if (this.scrollerDiv && this.scrollerDiv != 'scrollingContent') exp[this.scrollerDiv].style.overflow = 'hidden';

		hs.outlinePreloader = 0;
		this.wrapper.style.width = null;
		
		var width = (this.isImage) ? this.content.width : parseInt(this.content.style.width);
		var height = (this.isImage) ? this.content.height : parseInt(this.content.style.height);
		this.changeSize(
			parseInt(this.wrapper.style.left),
			parseInt(this.wrapper.style.top),
			width,
			height,
			this.thumbLeft - this.offsetBorderW + this.thumbOffsetBorderW,
			this.thumbTop - this.offsetBorderH + this.thumbOffsetBorderH,
			this.thumbWidth,
			this.thumbHeight, 
			hs.restoreDuration,
			hs.restoreSteps
		);			
		
		setTimeout('if (hs.expanders['+ this.key +']) hs.expanders['+ this.key +'].onEndClose()', hs.restoreDuration);
	
	} catch(e) {
		hs.expanders[this.key].onEndClose();
	}
};

HsExpander.prototype.onEndClose = function () {
	this.thumb.style.visibility = 'visible';
	//this.content.style.visibility = 'hidden';
	
	if (hs.hideSelects) this.showHideElements('SELECT', 'visible');
	if (hs.hideIframes) this.showHideElements('IFRAME', 'visible');
	
	this.wrapper.parentNode.removeChild(this.wrapper);
	hs.expanders[this.key] = null;

	hs.cleanUp();
};

HsExpander.prototype.createOverlay = function (el, position, hideOnMouseOut, opacity) {
	if (typeof el == 'string' && hs.$(el)) {
		el = hs.$(el).cloneNode(true);
		el.id = null;	
	}
	if (!el || typeof el == 'string' || !this.isImage) return;
	
	if (!position) var position = 'center center';
	var overlay = hs.createElement(
		'div',
		null,
		{
			'position' : 'absolute',
			'zIndex' : 3,
			'visibility': 'hidden'
		},
		this.wrapper
	);
	if (opacity && opacity < 1) {
		if (hs.ie) overlay.style.filter = 'alpha(opacity='+ (opacity * 100) +')';
		else overlay.style.opacity = opacity;
	}
	el.className += ' highslide-display-block';
	overlay.appendChild(el);
	
	/*if (hs.ie && this.isImage) { // strange bug sometimes makes values wrong in the first def.
		this.offsetBorderW = hs.position(this.wrapper).x - hs.position(this.content).x;
		this.offsetBorderH = hs.position(this.wrapper).y - hs.position(this.content).y;
	}*/
	var left = this.offsetBorderW;
	var top = this.offsetBorderH;
	
	if (position.match(/^bottom/)) top += this.content.height - overlay.offsetHeight;
	if (position.match(/^center/)) top += (this.content.height - overlay.offsetHeight) / 2;
	if (position.match(/right$/)) left += this.content.width - overlay.offsetWidth;
	if (position.match(/center$/)) left += (this.content.width - overlay.offsetWidth) / 2;
	overlay.style.left = left +'px';
	overlay.style.top = top +'px';
	
	if (this.mouseIsOver || !hideOnMouseOut) overlay.style.visibility = 'visible';
	if (hideOnMouseOut) overlay.setAttribute('hideOnMouseOut', true);
	
	this.overlays.push(overlay);
};

HsExpander.prototype.createCustomOverlays = function() {
	for (i = 0; i < hs.overlays.length; i++) {
		var o = hs.overlays[i];
		if (o.thumbnailId == null || o.thumbnailId == this.thumbsUserSetId) {
			this.createOverlay(o.overlayId, o.position, o.hideOnMouseOut, o.opacity);
		}
	}
};

HsExpander.prototype.onMouseOver = function () {
	this.mouseIsOver = true;
	for (i = 0; i < this.overlays.length; i++) {
		this.overlays[i].style.visibility = 'visible';
	}
};

HsExpander.prototype.onMouseOut = function(rel) {
	this.mouseIsOver = false;
	var hideThese = new Array();
	for (i = 0; i < this.overlays.length; i++) {
		var node = rel;
		while (node && node.parentNode) {
			if (node == this.overlays[i]) return;
			node = node.parentNode;
		}
		if (this.overlays[i].getAttribute('hideOnMouseOut')) {
			hideThese.push(this.overlays[i]);
		}
	}
	for (i = 0; i < hideThese.length; i++) {		
		hideThese[i].style.visibility = 'hidden';
	}
};

HsExpander.prototype.createFullExpand = function () {
	var a = hs.createElement(
		'a',
		{
			href: 'javascript:hs.expanders['+ this.key +'].doFullExpand();',
			title: hs.fullExpandTitle
		},
		{
			background: 'url('+ hs.graphicsDir + hs.fullExpandIcon+')',
			display: 'block',
			margin: '0 5px 5px 0',
			width: '32px',
			height: '32px'
		}
	);
	
	this.createOverlay(a, 'bottom right', true, 0.75);
	this.fullExpandIcon = a;
};

HsExpander.prototype.doFullExpand = function () {
	try {
	
		var newLeft = parseInt(this.wrapper.style.left) - (this.fullExpandWidth - this.content.width) / 2;
		if (newLeft < hs.marginLeft) newLeft = hs.marginLeft;
		this.wrapper.style.left = newLeft +'px';
		
		var borderOffset = this.wrapper.offsetWidth - this.content.width;
		
		
		this.content.width = this.fullExpandWidth;
		this.content.height = this.fullExpandHeight;
		this.focus();
		
		this.fullExpandIcon.parentNode.removeChild(this.fullExpandIcon);
		
		this.wrapper.style.width = (this.content.width + borderOffset) +'px';
		
		if (this.outlineType) this.repositionOutline(0);
		
		// reposition overlays
		for (x in this.overlays) {
			this.wrapper.removeChild(this.overlays[x]);
		}		
		if (hs.showCredits) this.writeCredits();
		this.createCustomOverlays();
		
		this.redoShowHide();
	
	} catch(e) {
		window.location.href = hs.expanders[this.key].content.src;
	}
};

// on end move and resize
HsExpander.prototype.redoShowHide = function() {
	var imgPos = {
		x: parseInt(this.wrapper.style.left) - 20, 
		y: parseInt(this.wrapper.style.top) - 20, 
		w: this.content.offsetWidth + 40, 
		h: this.content.offsetHeight + 40 + this.spaceForCaption
	};
	if (hs.hideSelects) this.showHideElements('SELECT', 'hidden', imgPos);
	if (hs.hideIframes) this.showHideElements('IFRAME', 'hidden', imgPos);
		
};

// set handlers
hs.addEventListener(document, 'mousedown', hs.mouseDownHandler);
hs.addEventListener(document, 'mouseup', hs.mouseUpHandler);

//beveled  drop-shadow outer-glow rounded-white 设置显示放大时的风格
hs.graphicsDir = "highslide/graphics/";
hs.captionId = "the-caption";
hs.outlineType = "rounded-white";
window.onload = function() {
	hs.preloadImages(5);
}