/**

 * reflection.js v2.0

 * http://cow.neondragon.net/stuff/reflection/

 * Freely distributable under MIT-style license.

 */

 

/* From prototype.js */

if (!document.myGetElementsByClassName) {

    document.myGetElementsByClassName = 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) {

                /* Fix hyperlinks */

                if(p.parentElement.tagName == 'A') {

                    var d = document.createElement('a');

                    d.href = p.parentElement.href;

                }  

                    

                /* 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 reflection = document.createElement('img');

                reflection.src = p.src;

                reflection.style.width = reflectionWidth+'px';

                reflection.style.display = 'block';

                reflection.style.height = p.height+"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;

                    context.rect(0, 0, reflectionWidth, reflectionHeight*2);

                    context.fill();

                }

            }

        } 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.myGetElementsByClassName('reflect');

    for (i=0;i<rimages.length;i++) {

        var rheight = null;

        var ropacity = null;

        

        var classes = rimages[i].className.split(' ');

        for (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(); }

// JavaScript Document