Simple namespacing function.

namespace.js

if(!Object.namespace)
Object.namespace = function( str ){
    if(!str) return;
    var  i = 0
        ,base = window
        ,shards,length

    if(str.indexOf("::") !== -1){
        shards = str.split("::");
        base = window[shards[0]] = window[shards[0]] || {};
        str = shards[1];
    }
    
    str = str.split('.');     
    
    length = str.length;
    for(;i<length;i++){
        base = base[str[i]] = base[str[i]] || {};
    }
    
    if(arguments.length > 1 && Object.extend){
        var args = Array.prototype.slice.call(arguments,1);
        base = Object.extend.apply(base, args);
    }

    return base;
}