betajs/betajs-shims

(function() {
    if (!this)
        return;
    this.preventDefault = this.preventDefault || function () {
        this.returnValue = false;
    };
    this.stopPropagation = this.stopPropagation || function () {
        this.cancelBubble=true;
    };    
}).call((function () {
    try {
        return Event.prototype;
    } catch (e) {
        return null;
    }
}).call(this));

(function() {
    if (!this)
        return;
    var eventMap = {
        "DOMContentLoaded": {
            "event": "onreadystatechange",
            "wrapper": function (wrapper) {
                return function (e) {
                    if (document.readyState=="complete")
                        wrapper(e);
                };
            }
        }
    };
    this.addEventListener = this.addEventListener || function (type, listener, useCapture) {
        var self = this;
        var wrapper = function (e) {
            e.target = e.srcElement || self;
            e.currentTarget = self;
            if (typeof listener.handleEvent != 'undefined')
                listener.handleEvent(e);
            else
                listener.call(self,e);
        };
        if (eventMap[type])
            wrapper = eventMap[type].wrapper(wrapper);
        this.attachEvent("on" + (eventMap[type] ? eventMap[type].event : type), wrapper);
        try {
            this.__eventlisteners = this.__eventlisteners || {};
            this.__eventlisteners[type] = this.__eventlisteners[type] || [];
            this.__eventlisteners[type].push({listener:listener, wrapper:wrapper});
        } catch (e) {
            listener.__eventwrapper = wrapper;
        }
    };
    this.removeEventListener = this.removeEventListener || function (type, listener, useCapture) {
        try {
            if (this.__eventlisteners && this.__eventlisteners[type]) {
                for (var i = 0; i < this.__eventlisteners[type].length; ++i) {
                    if (this.__eventlisteners[type][i].listener === listener) {
                        this.detachEvent("on" + (eventMap[type] ? eventMap[type].event : type), this.__eventlisteners[type][i].wrapper);
                        this.__eventlisteners[type].splice(i, 1);
                        return;
                    }
                }
            }
        } catch (e) {}
        try {
            if (listener.__eventwrapper)
                this.detachEvent("on" + (eventMap[type] ? eventMap[type].event : type), listener.__eventwrapper);
        } catch (e) {}
    };
    this.dispatchEvent = this.dispatchEvent || function (eventObject) {
        var type = eventObject.type;
        var onEvent = "on" + type;
        try {
            return this.fireEvent(onEvent, eventObject);
        } catch (e) {
            var E = Element;
            try {
                E = HTMLElement;
            } catch (e) {}
            if (onEvent in E.prototype)
                throw e;
            if (this.__eventlisteners && this.__eventlisteners[type]) {
                for (var i = 0; i < this.__eventlisteners[type].length; ++i) {
                    this.__eventlisteners[type][i].wrapper.call(this, eventObject);
                }
            }
        }
    };
}).call((function () {
    try {
        return Element.prototype;
    } catch (e) {
        return null;
    }
}).call(this));
    
(function() {
    if (!this)
        return;
    this.addEventListener = this.addEventListener || Element.prototype.addEventListener;
    this.removeEventListener = this.removeEventListener || Element.prototype.removeEventListener;
    this.dispatchEvent = this.dispatchEvent || Element.prototype.dispatchEvent;
}).call((function () {
    try {
        return HTMLDocument.prototype;
    } catch (e) {
        return null;
    }
}).call(this));

(function() {
    if (!this)
        return;
    this.addEventListener = this.addEventListener || Element.prototype.addEventListener;
    this.removeEventListener = this.removeEventListener || Element.prototype.removeEventListener;
    this.dispatchEvent = this.dispatchEvent || Element.prototype.dispatchEvent;
}).call((function () {
    try {
        return Window.prototype;
    } catch (e) {
        return null;
    }
}).call(this));