/**
 * reflection.js v1.6
 *
 * Contributors: Cow http://cow.neondragon.net
 *               Gfx http://www.jroller.com/page/gfx/
 *               Sitharus http://www.sitharus.com
 *               Andreas Linde http://www.andreaslinde.de
 *               Tralala, coder @ http://www.vbulletin.org
 *
 * Freely distributable under MIT-style license.
 */

/* From prototype.js */
document.getElementsByClassName = function(className) {
	var children = document.getElementsByTagName('*') || document.all;
	var elements = new Array();

	for (var i = 0; i < children.length; i++) {
		var child = children[i];
		var classNames = child.className.split(' ');
		for (var j = 0; j < classNames.length; j++) {
			if (classNames[j] == className) {
				elements.push(child);
				break;
			}
		}
	}
	return elements;
}

var Reflection = {
	defaultHeight : 0.5,
	defaultOpacity: 0.5,

	add: function(image, options) {
		Reflection.remove(image);

		doptions = { "height" : Reflection.defaultHeight, "opacity" : Reflection.defaultOpacity }
		if (options) {
			for (var i in doptions) {
				if (!options[i]) {
					options[i] = doptions[i];
				}
			}
		} else {
			options = doptions;
		}

		try {
			var d = document.createElement('div');
			var p = image;

			var classes = p.className.split(' ');
			var newClasses = '';
			for (j=0;j<classes.length;j++) {
				if (classes[j] != "reflect") {
					if (newClasses) {
						newClasses += ' '
					}

					newClasses += classes[j];
				}
			}

			var reflectionHeight = Math.floor(p.height*options['height']);
			var divHeight = Math.floor(p.height*(1+options['height']));

			var reflectionWidth = p.width;

			if (document.all && !window.opera) {
				/* Copy original image's classes & styles to div */
				d.className = newClasses;
				p.className = 'reflected';

				d.style.cssText = p.style.cssText;
				p.style.cssText = 'vertical-align: bottom';

				if (p.parentNode.href) {
					p.style.cssText = 'cursor: pointer;';
					p.onclick = function () {
						window.location = p.parentNode.parentNode.href;
						};
				}

				var reflection = document.createElement('img');
				reflection.src = p.src;
				reflection.style.width = reflectionWidth+'px';

				reflection.style.marginBottom = "-"+(p.height-reflectionHeight)+'px';
				reflection.style.filter = 'flipv progid:DXImageTransform.Microsoft.Alpha(opacity='+(options['opacity']*100)+', style=1, finishOpacity=0, startx=0, starty=0, finishx=0, finishy='+(options['height']*100)+')';

				d.style.width = reflectionWidth+'px';
				d.style.height = divHeight+'px';
				p.parentNode.replaceChild(d, p);

				d.appendChild(p);
				d.appendChild(reflection);
			} else {
				var canvas = document.createElement('canvas');
				if (canvas.getContext) {
					/* Copy original image's classes & styles to div */
					d.className = newClasses;
					p.className = 'reflected';

					d.style.cssText = p.style.cssText;
					p.style.cssText = 'vertical-align: bottom';

					var context = canvas.getContext("2d");

					canvas.style.height = reflectionHeight+'px';
					canvas.style.width = reflectionWidth+'px';
					canvas.height = reflectionHeight;
					canvas.width = reflectionWidth;

					d.style.width = reflectionWidth+'px';
					d.style.height = divHeight+'px';
					p.parentNode.replaceChild(d, p);

					d.appendChild(p);
					d.appendChild(canvas);

					context.save();

					context.translate(0,image.height-1);
					context.scale(1,-1);

					context.drawImage(image, 0, 0, reflectionWidth, image.height);

					context.restore();

					context.globalCompositeOperation = "destination-out";
					var gradient = context.createLinearGradient(0, 0, 0, reflectionHeight);

					gradient.addColorStop(1, "rgba(255, 255, 255, 1.0)");
					gradient.addColorStop(0, "rgba(255, 255, 255, "+(1-options['opacity'])+")");

					context.fillStyle = gradient;
					if (navigator.appVersion.indexOf('WebKit') != -1) {
						context.fill();
					} else {
						context.fillRect(0, 0, reflectionWidth, reflectionHeight*2);
					}
				}
			}
		} catch (e) {
	    }
	},

	remove : function(image) {
		if (image.className == "reflected") {
			image.className = image.parentNode.className;
			image.parentNode.parentNode.replaceChild(image, image.parentNode);
		}
	}
}

function addReflections() {
	var rimages = document.getElementsByClassName('thumbnails');
	var current_images = document.getElementsByClassName('current-thumbnail');
	for (i=0;i<rimages.length;i++) {
		Reflection.add(rimages[i], { height: 1.0, opacity: .2});
	}
	for (i=0;i<current_images.length;i++) {
		Reflection.add(current_images[i], { height: 1.0, opacity: .2});
	}
}

function slide() {
	if (slided_out == false){
		if (window.XMLHttpRequest) {
			Effect.SlideDown('hide-wrapper');
		} else {
		// IE6, older browsers
			document.getElementById('top-wrapper').style.paddingRight = '26px';
			document.getElementById('hide-wrapper').style.display = 'block';
		}
		slided_out = true;
	} else {
		if (window.XMLHttpRequest) {
			Effect.SlideUp('hide-wrapper');
		} else {
		// IE6, older browsers
			document.getElementById('top-wrapper').style.paddingRight = '0px';
			document.getElementById('hide-wrapper').style.display = 'none';

		}
		slided_out = false;
	}
}

var slided_out = false;

var previousOnload = window.onload;
window.onload = function () {
	if(previousOnload) previousOnload();



	if (window.XMLHttpRequest) {
		Effect.SlideUp('hide-wrapper', {Duration:0});
		document.getElementById('hide-wrapper').style.display = 'none';
		document.getElementById('thumbs').style.display = 'block';
		document.getElementById('comments-button').style.display = 'inline';
		document.getElementById('slideshow-button').style.display = 'inline';
		document.getElementById('email-button').style.display = 'inline';
	} else {
	// IE6, older browsers
		document.getElementById('hide-wrapper').style.display = 'none';
	}


	//alert('window' + window.innerWidth + 'offset' + document.body.offsetWidth);
	if (navigator.appName.indexOf('Microsoft')!=-1) {
		//alert('ie');
		var count_thumbs = 0;
		var current_pos = 0;
		var browserWidth= document.body.offsetWidth;
		var thumbs = document.getElementById("thumbs");
		var mylink = thumbs.getElementsByTagName("img");

		for (var i = 0; i < mylink.length; i++) {
				if ( mylink[i].getAttribute('className') == 'current-thumbnail'){
					current_pos = count_thumbs;
				}
				count_thumbs++;
		}
		document.getElementById('thumbs').style.marginLeft =  (  current_pos/21*(browserWidth-2200)  ) + "px";
	} else {

		if(navigator.appName == 'Opera'){

			//alert('opera');
			var count_thumbs = 0;
			var current_pos =  0;
			var browserWidth = window.innerWidth;
			var thisLink;
			var thumbnails = document.evaluate( "//div[@id='thumbs']/a/img" , document ,null , XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE , null );

			for (var i = 0; i < thumbnails.snapshotLength; i++) {
					thisLink = thumbnails.snapshotItem(i);

					if (thisLink.attributes[3].nodeValue == 'current-thumbnail'){
								current_pos = count_thumbs ;
					}
					count_thumbs++;
			}
			document.getElementById('thumbs').style.marginLeft = (  current_pos/21*(browserWidth-2200)  ) + "px";
		} else {

			if( navigator.vendor == 'Apple Computer, Inc.'){
				//alert('safari');
				var count_thumbs = 0;
				var current_pos = 0;
				var browserWidth= document.body.offsetWidth;
				var thumbs = document.getElementById("thumbs");
				var mylink = thumbs.getElementsByTagName("img");

				for (var i = 0; i < mylink.length; i++) {
						if ( mylink[i].getAttribute('class') == 'current-thumbnail'){
							current_pos = count_thumbs;
						}
						count_thumbs++;
				}
				document.getElementById('thumbs').style.marginLeft =  (  current_pos/21*(browserWidth-2200)  ) + "px";
			} else {

				//alert('ff');
				var count_thumbs = 0;
				var current_pos =  0;
				var browserWidth = window.innerWidth;
				var thisLink;
				var thumbnails = document.evaluate( "//div[@id='thumbs']/a/img" , document ,null , XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE , null );

				for (var i = 0; i < thumbnails.snapshotLength; i++) {
						thisLink = thumbnails.snapshotItem(i);

						if (thisLink.attributes[2].nodeValue == 'current-thumbnail'){
									current_pos = count_thumbs ;
						}
						count_thumbs++;
				}
				document.getElementById('thumbs').style.marginLeft = (  current_pos/21*(browserWidth-2200)  ) + "px";
			}
		}
	}

	addReflections();

	if (window.XMLHttpRequest) {

		} else {
		// IE6, older browsers
			document.getElementById('mac').style.display = 'none';

			document.getElementById('thumbs').style.display = 'block';
			document.getElementById('thumbs').style.position = 'absolute';
			document.getElementById('thumbs').style.left = '0px';
			document.getElementById('thumbs').style.clip = 'rect(0px, ' + document.body.offsetWidth + 'px, 200px, 0px)';

	}
}