// http://prototype.conio.net/dist/prototype-1.4.0.js
// http://wanderingken.com/2006/04/01/extending-prototype-classextend/

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;
}


Object.extend(Class,
{
    extend: function(source, additions)
    {
        var newclass = Class.create();
        if ($C(source))
        {
            Object.extend($C(newclass),$C(source));
        }
        Object.extend($C(newclass), additions);
        return newclass;
    }
});

function $C(object) { return object.prototype; }