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);
		var 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(var j=0;j<classes.length;j++) {
				if (classes[j] != "reflect") {
					if (newClasses) {
						newClasses += ' '
					}
					newClasses += classes[j];
				}
			}
			var img_height = ((p.height) ? p.height : parseInt(p.style.height.replace(/px/,'')));
			var img_width = ((p.width) ? p.width : parseInt(p.style.width.replace(/px/,'')));
			
			var reflectionHeight = Math.floor(img_height*options['height']);
			var divHeight = Math.floor(img_height*(1+options['height']));

			if (document.all && !window.opera) {
                if(p.parentElement.tagName == 'A') {
	                var d = document.createElement('a');
	                d.href = p.parentElement.href;
                }
				d.className = newClasses;
				p.className = 'reflected';				
				d.style.cssText = p.style.cssText;
				p.style.cssText = 'vertical-align: bottom';
				var reflection = document.createElement('img');
				reflection.src = p.src;
				reflection.style.width = img_width+'px';
				reflection.style.marginBottom = "-"+(img_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 = img_width+'px';
				d.style.height = divHeight+'px';
				p.parentNode.replaceChild(d, p);
				p.style.width = img_width+"px";
				p.style.height = img_height+"px";				
				d.appendChild(p);
				d.appendChild(reflection);
			} else {
				var canvas = document.createElement('canvas');
				if (canvas.getContext) {
					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 = img_width+'px';
					canvas.height = reflectionHeight;
					canvas.width = img_width;
					d.style.width = img_width+'px';
					d.style.height = divHeight+'px';
					p.parentNode.replaceChild(d,p);
					p.style.width = img_width+"px";
					p.style.height = img_height+"px";
					d.appendChild(p);
					d.appendChild(canvas);
					context.save();
					context.translate(0,img_height-1);
					context.scale(1,-1);
					context.drawImage(image, 0, 0, img_width, img_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, img_width, 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('reflect');
	for(var i=0;i<rimages.length;i++) {
		var rheight = null;
		var ropacity = null;
		var classes = rimages[i].className.split(' ');
		for (var j=0;j<classes.length;j++) {
			if (classes[j].indexOf("rheight") == 0) {
				var rheight = classes[j].substring(7)/100;
			} else if (classes[j].indexOf("ropacity") == 0) {
				var ropacity = classes[j].substring(8)/100;
			}
		}
		Reflection.add(rimages[i], { height: rheight, opacity : ropacity});
	}
}

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