/*  Prototype JavaScript framework
 *  (c) 2005 Sam Stephenson <sam@conio.net>
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://prototype.conio.net/
/*--------------------------------------------------------------------------*/

//note: modified & stripped down version of prototype, to be used with moo.fx by mad4milk (http://moofx.mad4milk.net).
//note2: modified by MyBB Group to add Event class from full version of prototype

var Class = {
    create: function() {
        return function() {
            this.initialize.apply(this, arguments);
        }
    }
}

Object.extend = function(destination, source) {
    for (property in source) destination[property] = source[property];
    return destination;
}

Function.prototype.bind = function(object) {
    var __method = this;
    return function() {
        return __method.apply(object, arguments);
    }
}

Function.prototype.bindAsEventListener = function(object) {
    var __method = this;
    return function(event) {
        return __method.call(object, event || window.event);
    }
}


function $() {
    if (arguments.length == 1) return get$(arguments[0]);
    var elements = [];
    $c(arguments).each(function(el) {
        elements.push(get$(el));
    });
    return elements;

    function get$(el) {
        if (typeof el == 'string') el = document.getElementById(el);
        return el;
    }
}

if (!window.Element) var Element = new Object();

Object.extend(Element, {
    remove: function(element) {
        element = $(element);
        try {
            element.parentNode.removeChild(element);
        } catch(e) {

        }
    },

    hasClassName: function(element, className) {
        element = $(element);
        if (!element) return;
        var hasClass = false;
        element.className.split(' ').each(function(cn) {
            if (cn == className) hasClass = true;
        });
        return hasClass;
    },

    addClassName: function(element, className) {
        element = $(element);
        Element.removeClassName(element, className);
        element.className += ' ' + className;
    },

    removeClassName: function(element, className) {
        element = $(element);
        if (!element) return;
        var newClassName = '';
        element.className.split(' ').each(function(cn, i) {
            if (cn != className) {
                if (i > 0) newClassName += ' ';
                newClassName += cn;
            }
        });
        element.className = newClassName;
    },

    cleanWhitespace: function(element) {
        element = $(element);
        $c(element.childNodes).each(function(node) {
            if (node.nodeType == 3 && !/\S/.test(node.nodeValue)) Element.remove(node);
        });
    },

    find: function(element, what) {
        element = $(element)[what];
        while (element.nodeType != 1) element = element[what];
        return element;
    }
});

var Position = {
    cumulativeOffset: function(element) {
        var valueT = 0, valueL = 0;
        do {
            valueT += element.offsetTop || 0;
            valueL += element.offsetLeft || 0;
            element = element.offsetParent;
        } while (element);
        return [valueL, valueT];
    }
};

document.getElementsByClassName = function(className) {
    var children = document.getElementsByTagName('*') || document.all;
    var elements = [];
    $c(children).each(function(child) {
        if (Element.hasClassName(child, className)) elements.push(child);
    });
    return elements;
}

if (!window.Event) {
    var Event = new Object();
}

Object.extend(Event, {
    KEY_BACKSPACE: 8,
    KEY_TAB:       9,
    KEY_RETURN:   13,
    KEY_ESC:      27,
    KEY_LEFT:     37,
    KEY_UP:       38,
    KEY_RIGHT:    39,
    KEY_DOWN:     40,
    KEY_DELETE:   46,

    element: function(event) {
        return event.target || event.srcElement;
    },

    isLeftClick: function(event) {
        return (((event.which) && (event.which == 1)) ||
                ((event.button) && (event.button == 1)));
    },

    pointerX: function(event) {
        return event.pageX || (event.clientX +
                               (document.documentElement.scrollLeft || document.body.scrollLeft));
    },

    pointerY: function(event) {
        return event.pageY || (event.clientY +
                               (document.documentElement.scrollTop || document.body.scrollTop));
    },

    stop: function(event) {
        if (event.preventDefault) {
            event.preventDefault();
            event.stopPropagation();
        } else {
            event.returnValue = false;
            event.cancelBubble = true;
        }
    },

// find the first node with the given tagName, starting from the
// node the event was triggered on; traverses the DOM upwards
    findElement: function(event, tagName) {
        var element = Event.element(event);
        while (element.parentNode && (!element.tagName ||
                                      (element.tagName.toUpperCase() != tagName.toUpperCase())))
            element = element.parentNode;
        return element;
    },

    observers: false,

    _observeAndCache: function(element, name, observer, useCapture) {
        if (!this.observers) this.observers = [];
        if (element.addEventListener) {
            this.observers.push([element, name, observer, useCapture]);
            element.addEventListener(name, observer, useCapture);
        } else if (element.attachEvent) {
            this.observers.push([element, name, observer, useCapture]);
            element.attachEvent('on' + name, observer);
        }
    },

    unloadCache: function() {
        if (!Event.observers) return;
        for (var i = 0; i < Event.observers.length; i++) {
            Event.stopObserving.apply(this, Event.observers[i]);
            Event.observers[i][0] = null;
        }
        Event.observers = false;
    },

    observe: function(element, name, observer, useCapture) {
        var element = $(element);
        useCapture = useCapture || false;

        if (name == 'keypress' &&
            (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
                    || element.attachEvent))
            name = 'keydown';

        this._observeAndCache(element, name, observer, useCapture);
    },

    stopObserving: function(element, name, observer, useCapture) {
        var element = $(element);
        useCapture = useCapture || false;

        if (name == 'keypress' &&
            (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
                    || element.detachEvent))
            name = 'keydown';

        if (element.removeEventListener) {
            element.removeEventListener(name, observer, useCapture);
        } else if (element.detachEvent) {
            element.detachEvent('on' + name, observer);
        }
    }
});

//useful array functions
/*
Array.prototype.each = function(func){
	for(var i=0;ob=this[i];i++) func(ob, i);
} */

function $c(array) {
    var nArray = [];
    for (i = 0; el = array[i]; i++) nArray.push(el);
    return nArray;
}

/* additions for IE5 compatibility */

if (!Array.prototype.shift) {
    Array.prototype.shift = function()
    {
        firstElement = this[0];
        this.reverse();
        this.length = Math.max(this.length - 1, 0);
        this.reverse();
        return firstElement;
    }
}

if (!Array.prototype.unshift) {
    Array.prototype.unshift = function()
    {
        this.reverse();
        for (var i = arguments.length - 1; i >= 0; i--) {
            this[this.length] = arguments[i]
        }
        this.reverse();
        return this.length
    }
}
if (!Array.prototype.push) {
    Array.prototype.push = function()
    {
        for (var i = 0; i < arguments.length; i++) {
            this[this.length] = arguments[i]
        }
        ;
        return this.length;
    }
}

if (!Array.prototype.pop) {
    Array.prototype.pop = function() {
        lastElement = this[this.length - 1];
        this.length = Math.max(this.length - 1, 0);
        return lastElement;
    }
}

if (!Function.prototype.apply) {
    Function.prototype.apply = function(oScope, args) {
        var sarg = [];
        var rtrn, call;

        if (!oScope) oScope = window;
        if (!args) args = [];

        for (var i = 0; i < args.length; i++) {
            sarg[i] = "args[" + i + "]";
        }

        call = "oScope.__applyTemp__(" + sarg.join(",") + ");";

        oScope.__applyTemp__ = this;
        rtrn = eval(call);
        //delete oScope.__applyTemp__;
        return rtrn;
    }
}

if (!Function.prototype.call) {
    Function.prototype.call = function(obj, param) {
        obj.base = this;
        obj.base(param);
    }
}

/* prevent memory leaks in IE */
Event.observe(window, 'unload', Event.unloadCache, false);