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The YUI dynamic global namespace object Fun with Javascript Objects.

/*
  The YUI dynamic global namespace object
*/

if(!window['console']) window.console = {
	log: function() {
		if(!this.obj)
		this.obj = document.getElementById('debug');
		if(!this.obj) {
			this.obj = document.createElement('div');
			document.body.appendChild(this.obj);
		}
		var outpt = this.obj, log = function(v) { 
			outpt.innerHTML = outpt.innerHTML.concat("<h5>", v, "</h5>");
		}
		for(var f = 0, a = arguments, m = a.length; f < m; f++) log(a[f]);
	}
}

// not official, just 4 fun

var YAHOO = {
	_toString: 'YAHOO',
	toString: function() { return this._toString; },
	rename: function(n) { 
		var o = this._toString, old = window[o];
		this._toString = n;
		window[n] = old;
		window[o] = null;
	},
	link: function(ln, root) {
		(root||window)[ln] = this;
	},
	copy: function(newn) {
		var n = {};
		this.extend(this,n)
		n._toString = newn;
		window[newn] = n;
	},
	extend: function(f,t) {
		for(var item in f) t[item] = f[item];
	},
	namespace: function() {
		var _1 = this; 
		for(var i = 0, base = _1, a = arguments; i < a.length; i++) {
			var f = a[i].split('.');
			if(f[0]==_1.toString()) f.shift();
			if(f.length < 1) return false;
			if(f.length > 1) {
				for(var o = 0; o < f.length; o++) {
					base[f[o]] = {}; base = base[f[o]];
				}
				base = _1;
			} else {
				base[a[i]] = {};
				base = base[a[i]];
			}
		}
	}
}

/*
testing
*/
YAHOO.namespace('shaw.abc');

console.log(YAHOO.shaw);
Object abc=Object
YAHOO.rename('$');

console.log(YAHOO);	
null
console.log($);
$ _toString=$ shaw=Object

$.link('YAHOO');

$.shaw = 'hello world!';
console.log($.shaw);
hello world!
console.log(YAHOO.shaw);
hello world!

$.copy('abc');

abc.namespace('util');

abc.util.hijackthis = function() {
    alert('hey');
}

console.log(abc.util, $.util);
Objectundefined

var g = {
	'hello': 1234
}

$.extend($, g);

g.namespace('hello.world');

console.log(g.hello.world);
Object