/**
 * Interface Elements for jQuery
 * utility function
 *
 * http://interface.eyecon.ro
 *
 * Copyright (c) 2006 Stefan Petre
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 *
 */

jQuery.iUtil = {
	getPosition : function(e)
	{
		var x = 0;
		var y = 0;
		var es = e.style;
		var restoreStyles = false;
		if (jQuery(e).css('display') == 'none') {
			var oldVisibility = es.visibility;
			var oldPosition = es.position;
			restoreStyles = true;
			es.visibility = 'hidden';
			es.display = 'block';
			es.position = 'absolute';
		}
		var el = e;
		while (el){
			x += el.offsetLeft + (el.currentStyle && !jQuery.browser.opera ?parseInt(el.currentStyle.borderLeftWidth)||0:0);
			y += el.offsetTop + (el.currentStyle && !jQuery.browser.opera ?parseInt(el.currentStyle.borderTopWidth)||0:0);
			el = el.offsetParent;
		}
		el = e;
		while (el && el.tagName  && el.tagName.toLowerCase() != 'body')
		{
			x -= el.scrollLeft||0;
			y -= el.scrollTop||0;
			el = el.parentNode;
		}
		if (restoreStyles == true) {
			es.display = 'none';
			es.position = oldPosition;
			es.visibility = oldVisibility;
		}
		return {x:x, y:y};
	},
	getPositionLite : function(el)
	{
		var x = 0, y = 0;
		while(el) {
			x += el.offsetLeft || 0;
			y += el.offsetTop || 0;
			el = el.offsetParent;
		}
		return {x:x, y:y};
	},
	getSize : function(e)
	{
		var w = jQuery.css(e,'width');
		var h = jQuery.css(e,'height');
		var wb = 0;
		var hb = 0;
		var es = e.style;
		if (jQuery(e).css('display') != 'none') {
			wb = e.offsetWidth;
			hb = e.offsetHeight;
		} else {
			var oldVisibility = es.visibility;
			var oldPosition = es.position;
			es.visibility = 'hidden';
			es.display = 'block';
			es.position = 'absolute';
			wb = e.offsetWidth;
			hb = e.offsetHeight;
			es.display = 'none';
			es.position = oldPosition;
			es.visibility = oldVisibility;
		}
		return {w:w, h:h, wb:wb, hb:hb};
	},
	getSizeLite : function(el)
	{
		return {
			wb:el.offsetWidth||0,
			hb:el.offsetHeight||0
		};
	},
	getClient : function(e)
	{
		var h, w, de;
		if (e) {
			w = e.clientWidth;
			h = e.clientHeight;
		} else {
			de = document.documentElement;
			w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
			h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight;
		}
		return {w:w,h:h};
	},
	getScroll : function (e)
	{
		var t=0, l=0, w=0, h=0, iw=0, ih=0;
		if (e && e.nodeName.toLowerCase() != 'body') {
			t = e.scrollTop;
			l = e.scrollLeft;
			w = e.scrollWidth;
			h = e.scrollHeight;
			iw = 0;
			ih = 0;
		} else  {
			if (document.documentElement) {
				t = document.documentElement.scrollTop;
				l = document.documentElement.scrollLeft;
				w = document.documentElement.scrollWidth;
				h = document.documentElement.scrollHeight;
			} else if (document.body) {
				t = document.body.scrollTop;
				l = document.body.scrollLeft;
				w = document.body.scrollWidth;
				h = document.body.scrollHeight;
			}
			iw = self.innerWidth||document.documentElement.clientWidth||document.body.clientWidth||0;
			ih = self.innerHeight||document.documentElement.clientHeight||document.body.clientHeight||0;
		}
		return { t: t, l: l, w: w, h: h, iw: iw, ih: ih };
	},
	getMargins : function(e, toInteger)
	{
		var el = jQuery(e);
		var t = el.css('marginTop') || '';
		var r = el.css('marginRight') || '';
		var b = el.css('marginBottom') || '';
		var l = el.css('marginLeft') || '';
		if (toInteger)
			return {
				t: parseInt(t)||0,
				r: parseInt(r)||0,
				b: parseInt(b)||0,
				l: parseInt(l)
			};
		else
			return {t: t, r: r,	b: b, l: l};
	},
	getPadding : function(e, toInteger)
	{
		var el = jQuery(e);
		var t = el.css('paddingTop') || '';
		var r = el.css('paddingRight') || '';
		var b = el.css('paddingBottom') || '';
		var l = el.css('paddingLeft') || '';
		if (toInteger)
			return {
				t: parseInt(t)||0,
				r: parseInt(r)||0,
				b: parseInt(b)||0,
				l: parseInt(l)
			};
		else
			return {t: t, r: r,	b: b, l: l};
	},
	getBorder : function(e, toInteger)
	{
		var el = jQuery(e);
		var t = el.css('borderTopWidth') || '';
		var r = el.css('borderRightWidth') || '';
		var b = el.css('borderBottomWidth') || '';
		var l = el.css('borderLeftWidth') || '';
		if (toInteger)
			return {
				t: parseInt(t)||0,
				r: parseInt(r)||0,
				b: parseInt(b)||0,
				l: parseInt(l)||0
			};
		else
			return {t: t, r: r,	b: b, l: l};
	},
	getPointer : function(event)
	{
		var x = event.pageX || (event.clientX + (document.documentElement.scrollLeft || document.body.scrollLeft)) || 0;
		var y = event.pageY || (event.clientY + (document.documentElement.scrollTop || document.body.scrollTop)) || 0;
		return {x:x, y:y};
	},
	traverseDOM : function(nodeEl, func)
	{
		func(nodeEl);
		nodeEl = nodeEl.firstChild;
		while(nodeEl){
			jQuery.iUtil.traverseDOM(nodeEl, func);
			nodeEl = nodeEl.nextSibling;
		}
	},
	purgeEvents : function(nodeEl)
	{
		jQuery.iUtil.traverseDOM(
			nodeEl,
			function(el)
			{
				for(var attr in el){
					if(typeof el[attr] === 'function') {
						el[attr] = null;
					}
				}
			}
		);
	},
	centerEl : function(el, axis)
	{
		var clientScroll = jQuery.iUtil.getScroll();
		var windowSize = jQuery.iUtil.getSize(el);
		if (!axis || axis == 'vertically')
			jQuery(el).css(
				{
					top: clientScroll.t + ((Math.max(clientScroll.h,clientScroll.ih) - clientScroll.t - windowSize.hb)/2) + 'px'
				}
			);
		if (!axis || axis == 'horizontally')
			jQuery(el).css(
				{
					left:	clientScroll.l + ((Math.max(clientScroll.w,clientScroll.iw) - clientScroll.l - windowSize.wb)/2) + 'px'
				}
			);
	},
	fixPNG : function (el, emptyGIF) {
		var images = jQuery('img[@src*="png"]', el||document), png;
		images.each( function() {
			png = this.src;				
			this.src = emptyGIF;
			this.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + png + "')";
		});
	}
};

// Helper function to support older browsers!
[].indexOf || (Array.prototype.indexOf = function(v, n){
	n = (n == null) ? 0 : n;
	var m = this.length;
	for (var i=n; i<m; i++)
		if (this[i] == v)
			return i;
	return -1;
}); 



/**
 * Interface Elements for jQuery
 * ImageBox
 * 
 * http://interface.eyecon.ro
 * 
 * Copyright (c) 2006 Stefan Petre
 * Dual licensed under the MIT (MIT-LICENSE.txt) 
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 */

/**
 * This a jQuery equivalent for Lightbox2. Alternative to image popups that will display images in an overlay. All links that have attribute 'rel' starting with 'imagebox' and link to an image will display the image inside the page. Galleries can by build buy giving the value 'imagebox-galname' to attribute 'rel'. Attribute 'title' will be used as caption.
 * Keyboard navigation:
 *  -  next image: arrow right, page down, 'n' key, space
 *  -  previous image: arrow left, page up, 'p' key, backspace
 *  -  close: escape
 *
 * CSS
 *	#ImageBoxOverlay
 *	{
 *		background-color: #000;
 *	}
 *	#ImageBoxCaption
 *	{
 *		background-color: #F4F4EC;
 *	}
 *	#ImageBoxContainer
 *	{
 *		width: 250px;
 *		height: 250px;
 *		background-color: #F4F4EC;
 *	}
 *	#ImageBoxCaptionText
 *	{
 *		font-weight: bold;
 *		padding-bottom: 5px;
 *		font-size: 13px;
 *		color: #000;
 *	}
 *	#ImageBoxCaptionImages
 *	{
 *		margin: 0;
 *	}
 *	#ImageBoxNextImage
 *	{
 *		background-image: url(images/imagebox/spacer.gif);
 *		background-color: transparent;
 *	}
 *	#ImageBoxPrevImage
 *	{
 *		background-image: url(images/imagebox/spacer.gif);
 *		background-color: transparent;
 *	}
 *	#ImageBoxNextImage:hover
 *	{
 *		background-image: url(images/imagebox/next_image.jpg);
 *		background-repeat:	no-repeat;
 *		background-position: right top;
 *	}
 *	#ImageBoxPrevImage:hover
 *	{
 *		background-image: url(images/imagebox/prev_image.jpg);
 *		background-repeat:	no-repeat;
 *		background-position: left bottom;
 *	}
 * 
 * @name Imagebox
 * @description This a jQuery equivalent for Lightbox2. Alternative to image popups that will display images in an overlay. All links that have attribute 'rel' starting with 'imagebox' and link to an image will display the image inside the page. Galleries can by build buy giving the value 'imagebox-galname' to attribute 'rel'. Attribute 'title' will be used as caption.
 * @param Hash hash A hash of parameters
 * @option Integer border border width
 * @option String loaderSRC path to loading image
 * @option String closeHTML path to close overlay image
 * @option Float overlayOpacity opacity for overlay
 * @option String textImage when a galalry it is build then the iteration is displayed
 * @option String textImageFrom when a galalry it is build then the iteration is displayed
 * @option Integer fadeDuration fade duration in miliseconds
 *
 * @type jQuery
 * @cat Plugins/Interface
 * @author Stefan Petre
 */
jQuery.ImageBox = {
	options : {
		border				: 10,
		loaderSRC			: 'images/loading.gif',
		closeHTML			: '<img src="images/close.jpg" />',
		overlayOpacity		: 0.8,
		textImage			: 'Showing image',
		textImageFrom		: 'from',
		fadeDuration		: 400
	},
	imageLoaded : false,
	firstResize : false,
	currentRel : null,
	animationInProgress : false,
	opened : false,
	
	keyPressed : function(event)
	{
		if(!jQuery.ImageBox.opened || jQuery.ImageBox.animationInProgress)
			return;
		var pressedKey = event.charCode || event.keyCode || -1;
		switch (pressedKey)
		{
			//end
			case 35:
				if (jQuery.ImageBox.currentRel)
					jQuery.ImageBox.start(null, jQuery('a[@rel=' + jQuery.ImageBox.currentRel+ ']:last').get(0));
			break;
			//home
			case 36:
				if (jQuery.ImageBox.currentRel)
					jQuery.ImageBox.start(null, jQuery('a[@rel=' + jQuery.ImageBox.currentRel+ ']:first').get(0));
			break;
			//left
			case 37:
			//backspace
			case 8:
			//page up
			case 33:
			//p
			case 80:
			case 112:
				var prevEl = jQuery('#ImageBoxPrevImage');
				if(prevEl.get(0).onclick != null) {
					prevEl.get(0).onclick.apply(prevEl.get(0));
				}
			break;
			//up
			case 38:
			break;
			//right
			case 39:
			//page down
			case 34:
			//space
			case 32:
			//n
			case 110:
			case 78:
				var nextEl = jQuery('#ImageBoxNextImage');
				if(nextEl.get(0).onclick != null) {
					nextEl.get(0).onclick.apply(nextEl.get(0));
				}
			break;
			//down;
			case 40:
			break;
			//escape
			case 27:
				jQuery.ImageBox.hideImage();
			break;
		}
	},
	
	init : function(options)
	{
		$('#ImageBoxOverlay').remove();
		$('#ImageBoxOuterContainer').remove();
		
		if (options)
			jQuery.extend(jQuery.ImageBox.options, options);
		if (window.event) {
			jQuery('body',document).bind('keyup', jQuery.ImageBox.keyPressed);
		} else {
			jQuery(document).bind('keyup', jQuery.ImageBox.keyPressed);
		}
		jQuery('a').each(
			function()
			{
				el 				= jQuery(this);
				relAttr 		= el.attr('rel')||'';
				hrefAttr 		= el.attr('href')||'';
				imageTypes 		= /\.jpg|\.jpeg|\.png|\.gif|\.bmp/g;
				if (hrefAttr.toLowerCase().match(imageTypes) != null && relAttr.toLowerCase().indexOf('imagebox') == 0) {
					el.bind('click', jQuery.ImageBox.start);
				}
			}
		);
		if (jQuery.browser.msie) {
			iframe = document.createElement('iframe');
			jQuery(iframe)
				.attr(
					{
						id			: 'ImageBoxIframe',
						src			: 'javascript:false;',
						frameborder	: 'no',
						scrolling	: 'no'
					}
				)
				.css (
					{
						display		: 'none',
						position	: 'absolute',
						top			: '0',
						left		: '0',
						filter		: 'progid:DXImageTransform.Microsoft.Alpha(opacity=0)'
					}
				);
			jQuery('body').append(iframe);
		}
		
		overlay	= document.createElement('div');
		jQuery(overlay)
			.attr('id', 'ImageBoxOverlay')
			.css(
				{
					position	: 'absolute',
					display		: 'none',
					top			: '0',
					left		: '0',
					opacity		: 0
				}
			)
			.append(document.createTextNode(' '))
			.bind('click', jQuery.ImageBox.hideImage);
		
		captionText = document.createElement('div');
		jQuery(captionText)
			.attr('id', 'ImageBoxCaptionText')
			.css(
				{
					paddingLeft		: jQuery.ImageBox.options.border + 'px'
				}
			)
			.append(document.createTextNode(' '));
			
		captionImages = document.createElement('div');
		jQuery(captionImages)
			.attr('id', 'ImageBoxCaptionImages')
			.css(
				{
					paddingLeft		: jQuery.ImageBox.options.border + 'px',
					paddingBottom	: jQuery.ImageBox.options.border + 'px'
				}
			)
			.append(document.createTextNode(' '));
			
		closeEl = document.createElement('a');
		jQuery(closeEl)
			.attr(
				{
					id			: 'ImageBoxClose',
					href		: '#'
				}
			)
			.css(
				{
					position	: 'absolute',
					right		: jQuery.ImageBox.options.border + 'px',
					top			: '0'
				}
			)
			.append(jQuery.ImageBox.options.closeHTML)
			.bind('click', jQuery.ImageBox.hideImage);
			
		captionEl = document.createElement('div');
		jQuery(captionEl)
			.attr('id', 'ImageBoxCaption')
			.css(
				{
					position	: 'relative',
					textAlign	: 'left',
					margin		: '0 auto',
					zIndex		: 1
				}
			)
			.append(captionText)
			.append(captionImages)
			.append(closeEl);
		
		loader = document.createElement('img');
		loader.src = jQuery.ImageBox.options.loaderSRC;
		jQuery(loader)
			.attr('id', 'ImageBoxLoader')
			.css(
				{
					position	: 'absolute'
				}
			);
			
		prevImage = document.createElement('a');
		jQuery(prevImage)
			.attr(
				{
					id			: 'ImageBoxPrevImage',
					href		: '#'
				}
			)
			.css(
				{
					position		: 'absolute',
					display			: 'none',
					overflow		: 'hidden',
					textDecoration	: 'none'
				}
			)
			.append(document.createTextNode(' '));
			
		nextImage = document.createElement('a');
		jQuery(nextImage)
			.attr(
				{
					id			: 'ImageBoxNextImage',
					href		: '#'
				}
			)
			.css(
				{
					position		: 'absolute',
					overflow		: 'hidden',
					textDecoration	: 'none'
				}
			)
			.append(document.createTextNode(' '));
		
		container = document.createElement('div');
		jQuery(container)
			.attr('id', 'ImageBoxContainer')
			.css(
				{
					display		: 'none',
					position	: 'relative',
					overflow	: 'hidden',
					textAlign	: 'left',
					margin		: '0 auto',
					top			: '0',
					left		: '0',
					zIndex		: 2
				}
			)
			.append([loader, prevImage, nextImage]);
		
		outerContainer = document.createElement('div');
		jQuery(outerContainer)
			.attr('id', 'ImageBoxOuterContainer')
			.css(
				{
					display		: 'none',
					position	: 'absolute',
					overflow	: 'hidden',
					top			: '0',
					left		: '0',
					textAlign	: 'center',
					backgroundColor : 'transparent',
					lineHeigt	: '0'
				}
			)
			.append([container,captionEl]);
		
		jQuery('body')
			.append(overlay)
			.append(outerContainer);
	},
	
	start : function(e, elm)
	{
		el = elm ? jQuery(elm) : jQuery(this);
		linkRel =  el.attr('rel');
		var totalImages, iteration, prevImage, nextImage;
		if (linkRel != 'imagebox') {
			jQuery.ImageBox.currentRel = linkRel;
			gallery = jQuery('a[@rel=' + linkRel + ']');
			totalImages = gallery.size();
			iteration = gallery.index(elm ? elm : this);
			prevImage = gallery.get(iteration - 1);
			nextImage = gallery.get(iteration + 1);
		}
		imageSrc =  el.attr('href');
		captionText = el.attr('title');
		pageSize = jQuery.iUtil.getScroll();
		overlay = jQuery('#ImageBoxOverlay');
		if (!jQuery.ImageBox.opened) {
			jQuery.ImageBox.opened = true;
			if (jQuery.browser.msie) {
				jQuery('#ImageBoxIframe')
					.css ('height', Math.max(pageSize.ih,pageSize.h) + 'px')
					.css ('width', Math.max(pageSize.iw,pageSize.w) + 'px')
					.show();
			}
			overlay
				.css ('height', Math.max(pageSize.ih,pageSize.h) + 'px')
				.css ('width', Math.max(pageSize.iw,pageSize.w) + 'px')
				.show()
				.fadeTo( 
					300,
					jQuery.ImageBox.options.overlayOpacity,
					function()
					{
						jQuery.ImageBox.loadImage(
							imageSrc, 
							captionText, 
							pageSize, 
							totalImages, 
							iteration,
							prevImage,
							nextImage
						);
					}
				);
			jQuery('#ImageBoxOuterContainer').css ('width', Math.max(pageSize.iw,pageSize.w) + 'px');
		} else {
			jQuery('#ImageBoxPrevImage').get(0).onclick = null;
			jQuery('#ImageBoxNextImage').get(0).onclick = null;
			jQuery.ImageBox.loadImage(
				imageSrc, 
				captionText, 
				pageSize, 
				totalImages, 
				iteration,
				prevImage,
				nextImage
			);
		}
		return false;
	},
		
	loadImage : function(imageSrc, captiontext, pageSize, totalImages, iteration, prevImage, nextImage)
	{
		
		jQuery('#ImageBoxCurrentImage').remove();
		prevImageEl = jQuery('#ImageBoxPrevImage');
		prevImageEl.hide();
		nextImageEl = jQuery('#ImageBoxNextImage');
		nextImageEl.hide();
		loader = jQuery('#ImageBoxLoader');
		container = jQuery('#ImageBoxContainer');
		outerContainer = jQuery('#ImageBoxOuterContainer');
		captionEl = jQuery('#ImageBoxCaption').css('visibility', 'hidden');
		jQuery('#ImageBoxCaptionText').html(captionText);
		jQuery.ImageBox.animationInProgress = true;
		if (totalImages)
			jQuery('#ImageBoxCaptionImages').html(
				jQuery.ImageBox.options.textImage 
				+ ' ' + (iteration + 1) + ' '
				+ jQuery.ImageBox.options.textImageFrom  
				+ ' ' + totalImages
			);
		if (prevImage) {
			prevImageEl.get(0).onclick = function()
			{
				this.blur();
				jQuery.ImageBox.start(null, prevImage);
				return false;
			};
		}
		if (nextImage) {
			nextImageEl.get(0).onclick =function()
			{
				this.blur();
				jQuery.ImageBox.start(null, nextImage);
				return false;
			};
		}
		loader.show();
		containerSize = jQuery.iUtil.getSize(container.get(0));
		containerW = Math.max(containerSize.wb, loader.get(0).width + jQuery.ImageBox.options.border * 2);
		containerH = Math.max(containerSize.hb, loader.get(0).height + jQuery.ImageBox.options.border * 2);
		loader
			.css(
				{
					left	: (containerW - loader.get(0).width)/2 + 'px',
					top		: (containerH - loader.get(0).height)/2 + 'px'
				}
			);
		container
			.css(
				{
					width	: containerW + 'px',
					height	: containerH + 'px'
				}
			)
			.show();
		clientSize = jQuery.iUtil.getClient();
		outerContainer
			.css('top', pageSize.t +  (clientSize.h / 15) + 'px');
		if (outerContainer.css('display') == 'none') {
			outerContainer
				.show()
				.fadeIn(
					jQuery.ImageBox.options.fadeDuration
				);
		}
		
		imageEl = new Image;
		
		jQuery(imageEl)
			.attr('id', 'ImageBoxCurrentImage')
			.bind('load', 
			function()
			{
				containerW = imageEl.width + jQuery.ImageBox.options.border * 2;
				containerH = imageEl.height + jQuery.ImageBox.options.border * 2;
				
							
				loader.hide();
				container.animate(
					{
						height		: containerH
					},
					containerSize.hb != containerH ? jQuery.ImageBox.options.fadeDuration : 1,
					function()
					{
						container.animate(
							{
								width		: containerW
							},
							containerSize.wb != containerW ? jQuery.ImageBox.options.fadeDuration : 1,
							function()
							{
								container.prepend(imageEl);
								jQuery(imageEl)
									.css(
										{
											position	: 'absolute',
											left		: jQuery.ImageBox.options.border + 'px',
											top			: jQuery.ImageBox.options.border + 'px'
										}
									)
									.fadeIn(
										jQuery.ImageBox.options.fadeDuration,
										function()
										{
											captionSize = jQuery.iUtil.getSize(captionEl.get(0));
											if (prevImage) {
												prevImageEl
													.css(
														{
															left	: jQuery.ImageBox.options.border + 'px',
															top		: jQuery.ImageBox.options.border + 'px',
															width	: containerW/2 - jQuery.ImageBox.options.border * 3 + 'px',
															height	: containerH - jQuery.ImageBox.options.border * 2 + 'px'
														}
													)
													.show();
											}
											if (nextImage) {
												nextImageEl
													.css(
														{
															left	: containerW/2 + jQuery.ImageBox.options.border * 2 + 'px',
															top		: jQuery.ImageBox.options.border + 'px',
															width	: containerW/2 - jQuery.ImageBox.options.border * 3 + 'px',
															height	: containerH - jQuery.ImageBox.options.border * 2 + 'px'
														}
													)
													.show();
											}
											captionEl
												.css(
													{
														width		: containerW + 'px',
														top			: - captionSize.hb + 'px',
														visibility	: 'visible'
													}
												)
												.animate(
													{
														top		: -1
													},
													jQuery.ImageBox.options.fadeDuration,
													function()
													{
														jQuery.ImageBox.animationInProgress = false;
													}
												);
										}
									);
							}
						);
					}
				);
				
			}
		);
		imageEl.src = imageSrc;

	},
	
	hideImage : function()
	{
		jQuery('#ImageBoxCurrentImage').remove();
		jQuery('#ImageBoxOuterContainer').hide();
		jQuery('#ImageBoxCaption').css('visibility', 'hidden');
		jQuery('#ImageBoxOverlay').fadeTo(
			300, 
			0, 
			function(){
				jQuery(this).hide();
				if (jQuery.browser.msie) {
					jQuery('#ImageBoxIframe').hide();
				}
			}
		);
		jQuery('#ImageBoxPrevImage').get(0).onclick = null;
		jQuery('#ImageBoxNextImage').get(0).onclick = null;
		jQuery.ImageBox.currentRel = null;
		jQuery.ImageBox.opened = false;
		jQuery.ImageBox.animationInProgress = false;
		return false;
	}
};