(function(_scope){
  
  /*
   * pi.js
   * 1.1.1
   * Azer Koculu <http://azer.kodfabrik.com>
   * http://pi.kodfabrik.com
   */
  
  _scope.pi = Object(3.14159265358979323846);
  var pi  = _scope.pi; pi.version = [31.12,2008];

  pi.env = {
    ie: /MSIE/i.test(navigator.userAgent),
    ie6: /MSIE 6/i.test(navigator.userAgent),
    ie7: /MSIE 7/i.test(navigator.userAgent),
    ie8: /MSIE 8/i.test(navigator.userAgent),
    firefox: /Firefox/i.test(navigator.userAgent),
    opera: /Opera/i.test(navigator.userAgent),
    webkit: /Webkit/i.test(navigator.userAgent)
  };
  
  pi.util = {
    Array:{
      clone:function(_array,_undeep){
        var tmp = [];
        Array.prototype.push.apply(tmp,_array);
        pi.util.Array.forEach(tmp,function(_item,_index,_source){
          if(_item instanceof Array&&!_undeep)
            _source[_index] = pi.util.Array.clone(_source[_index]);
        });
        return tmp;
      },
      count:function(_array,_value){
        var count = 0;
        pi.util.Array.forEach(_array,function(){
          count+=Number(arguments[0]==_value);
        });
        return count;
      },
      forEach:function(_array,_function){
        if(_array.forEach)
          return _array.forEach(_function);
        for(var i=0,len=_array.length; i<len; i++)
          _function.apply(_array,[_array[i],i,_array]);  
      },
      getLatest:function(_array){
        return _array[_array.length-1];
      },
      indexOf:function(_array,_value){
        if(!pi.env.ie){
          return _array.indexOf(_value);
        };
        
        var index = -1;
        for(var i=0, len=_array.length; i<len; i++){
          if(_array[i]==_value){
            index = i;
            break;
          }
        }
        return index;
      },
      remove:function(_array,_index){
        var result = _array.slice(0,_index);
        _array = Array.prototype.push.apply(result,_array.slice(_index+1));
        return result;
      },
      rotate:function(_array,_value){
        var source = _array;
        pi.util.Array.forEach( pi.util.Array.clone(_array,true), function(_v,_i,_s){
          var index = _i+_value;
          index = index<0?_s.length+index:index;
          index = index>=_s.length?Math.abs(index-_s.length):index;
          source[index] = _v;
        });
        return source;
      }
    },
    Curry:function(_fn,_scope){
      var fn = _fn, scope = _scope||window, args = Array.prototype.slice.call(arguments,2);
      return function(){ 
        return fn.apply(scope,args.concat( Array.prototype.slice.call(arguments,0) )); 
      };
    },
    Extend:function(_superClass,_prototype,_skipClonning){
      var object = new pi.base;
      if(_prototype["$Init"]){
        object.init = _prototype["$Init"];
        delete _prototype["$Init"];
      };
    
      object.body = _superClass==pi.base?_prototype:pi.util.Hash.merge(_prototype,_superClass.prototype);
      object.init=object.init||function(){
        if(_superClass!=pi.base)
          _superClass.apply(this,arguments);
      };
      
      return object.build(_skipClonning);
    },
    IsArray:function(_object){
      if(window.NodeList&&window.NamedNodeMap){
        if(_object instanceof Array||_object instanceof NodeList||_object instanceof NamedNodeMap||(window.HTMLCollection&&_object instanceof HTMLCollection))
          return true;
      };
      if(!_object||_object==window||typeof _object=="function"||typeof _object=="string"||typeof _object.length!="number"){
        return false
      };
      var len = _object.length;
      if(len>0&&_object[0]!=undefined&&_object[len-1]!=undefined){
        return true;
      } else {
        for(var key in _object){
          if(key!="item"&&key!="length"&&key!="setNamedItemNS"&&key!="setNamedItem"&&key!="getNamedItem"&&key!="removeNamedItem"&&key!="getNamedItemNS"&&key!="removeNamedItemNS"&&key!="tags"){
            return false;
          }
        }
        return true
      };
    },
    IsHash:function(_object){
      return _object && typeof _object=="object"&&(_object==window||_object instanceof Object)&&!_object.nodeName&&!pi.util.IsArray(_object)
    },
    Init:[],
    Import:function(_url,_type){
      var ftype = _type||_url.match(/\.(\w+)$/);
      ftype = ftype instanceof Array&&ftype.length>1?ftype[1]:ftype;
      switch(ftype){
        case "js":
          return window.eval.call(window,pi.xhr.get(_url).responseText);
        case "css":
          return new pi.element("link").attribute.set("rel","stylesheet").attribute.set("href",_url).insert( pi.get.byTag("head")[0] );
      };
      throw Error("pi.util.Import("+Array.prototype.join.apply(arguments,",")+"): Unknown filetype, specify absolute file type as give the second argument.");
    },
    AddEvent: function(_element,_eventName,_fn,_useCapture){
      _element[pi.env.ie?"attachEvent":"addEventListener"]((pi.env.ie?"on":"")+_eventName,_fn,_useCapture||false);
      return pi.util.Curry(pi.util.AddEvent,this,_element);
    },
    RemoveEvent: function(_element,_eventName,_fn,_useCapture){
      _element[pi.env.ie?"detachEvent":"removeEventListener"]((pi.env.ie?"on":"")+_eventName,_fn,_useCapture||false);
      return pi.util.Curry(pi.util.RemoveEvent,this,_element);
    },
    Include:function(_url,_onsuccess){
      var script = new pi.element("script").attribute.set("src",_url), done = false, head = pi.get.byTag("head")[0];
      script.element[pi.env.ie?"onreadystatechange":"onload"] = function(){
        if(!done && (!pi.env.ie || this.readyState == "complete")){
          if(_onsuccess)
            onsuccess.call(this);
          done = true;
          head.removeChild(script.element);
        }
      };
      script.insert(head);
      return script;
    },
    Element:{
      addClass:function(_element,_class){
        if( !pi.util.Element.hasClass(_element,_class) )
          pi.util.Element.setClass(_element, pi.util.Element.getClass(_element) + " " + _class );
      },
      getClass:function(_element){
        return _element.getAttribute(pi.env.ie?"className":"class")||"";
      },
      hasClass:function(_element,_class){
        return pi.util.Array.indexOf(pi.util.Element.getClass(_element).split(" "),_class)>-1;
      },
      removeClass:function(_element,_class){
        if( pi.util.Element.hasClass(_element,_class) ){
          var names = pi.util.Element.getClass(_element,_class).split(" ");
          pi.util.Element.setClass(
            _element, 
            pi.util.Array.remove(names,pi.util.Array.indexOf(names,_class)).join(" ")
          );
        }
      },
      setClass:function(_element,_value){
        _element.setAttribute(pi.env.ie?"className":"class", _value );
      },
      toggleClass:function(){
        if(pi.util.Element.hasClass.apply(this,arguments))
          pi.util.Element.removeClass.apply(this,arguments);
        else
          pi.util.Element.addClass.apply(this,arguments);
      },
      getOpacity:function(_styleObject){
        var styleObject = _styleObject;
        if(!pi.env.ie)
          return styleObject["opacity"];
          
        var alpha = styleObject["filter"].match(/opacity\=(\d+)/i);
        return alpha?alpha[1]/100:1;
      },
      setOpacity:function(_element,_value){
        if(!pi.env.ie)
          return pi.util.Element.addStyle(_element,{ "opacity":_value });
        _value*=100;
        pi.util.Element.addStyle(_element,{ "filter":"alpha(opacity="+_value+")" });
        return this._parent_;
      },
      getPosition:function(_element){
        var parent = _element,offsetLeft = document.body.offsetLeft, offsetTop = document.body.offsetTop, view = pi.util.Element.getView(_element);
        while(parent&&parent!=document.body&&parent!=document.firstChild){
          offsetLeft +=parseInt(parent.offsetLeft);
          offsetTop += parseInt(parent.offsetTop);
          parent = parent.offsetParent;
        };
        return {
          "bottom":view["bottom"],
          "clientLeft":_element.clientLeft,
          "clientTop":_element.clientTop,
          "left":view["left"],
          "marginTop":view["marginTop"],
          "marginLeft":view["marginLeft"],
          "offsetLeft":offsetLeft,
          "offsetTop":offsetTop,
          "position":view["position"],
          "right":view["right"],
          "top":view["top"],
          "zIndex":view["zIndex"]
        };
      },
      getSize:function(_element){
        var view = pi.util.Element.getView(_element);
        return {
          "height":view["height"],
          "clientHeight":_element.clientHeight,
          "clientWidth":_element.clientWidth,
          "offsetHeight":_element.offsetHeight,
          "offsetWidth":_element.offsetWidth,
          "width":view["width"]
        }
      },
      addStyle:function(_element,_style){
        for(var key in _style){
          key = key=="float"?pi.env.ie?"styleFloat":"cssFloat":key;
          if (key == "opacity" && pi.env.ie) {
            pi.util.Element.setOpacity(_element,_style[key]);
            continue;
          }
          try {
            _element.style[key] = _style[key];
          }catch(e){}          
        }
      },
      getStyle:function(_element,_property){
        _property = _property=="float"?pi.env.ie?"styleFloat":"cssFloat":_property;
        if(_property=="opacity"&&pi.env.ie)
          return pi.util.Element.getOpacity(_element.style);
        return typeof _property=="string"?_element.style[_property]:_element.style;
      },
      getValue:function(_element){
        switch(_element.nodeName.toLowerCase()){
          case "input":
          case "textarea":
            return _element.value;
          case "select":
            return _element.options[_element.selectedIndex].value;
          default:
            return _element.innerHTML;
            break;
        }
      },
      getView:function(_element,_property){
        var view = document.defaultView?document.defaultView.getComputedStyle(_element,null):_element.currentStyle;
        _property = _property=="float"?pi.env.ie?"styleFloat":"cssFloat":_property;
        if(_property=="opacity"&&pi.env.ie)
          return pi.util.Element.getOpacity(_element,view);
        return typeof _property=="string"?view[_property]:view;
      }
    },
    Hash: {
      clone:function(_hash,_undeep){
        var tmp = {};
        for(var key in _hash){
          if( !_undeep&&pi.util.IsArray( _hash[key] ) ){
            tmp[key] = pi.util.Array.clone( _hash[key] );
          } else if( !_undeep&&pi.util.IsHash( _hash[key] ) ){
            tmp[ key ] = pi.util.Hash.clone(_hash[key]);
          } else {
            tmp[key] = _hash[key];
          }
        }
        return tmp;
      },
      merge:function(_hash,_source,_undeep){
        for(var key in _source){
          var value = _source[key];
          if (!_undeep&&pi.util.IsArray(_source[key])) {
            if(pi.util.IsArray( _hash[key] )){
              Array.prototype.push.apply( _source[key], _hash[key] )
            }
            else
              value = pi.util.Array.clone(_source[key]);
          }
          else if (!_undeep&&pi.util.IsHash(_source[key])) {
            if (pi.util.IsHash(_hash[key])) {
              value = pi.util.Hash.merge(_hash[key], _source[key]);
            } else {
              value = pi.util.Hash.clone( _source[key] );
            }
          } else if( _hash[key] )
            value = _hash[ key ];
          _hash[key] = value;
        };
        return _hash;
      }
    },
    Number:{
      range:function(_from,_to,_fn){
        for(var i=arguments.length>1?_from:0, array=[], len=(arguments.length>1?_to:arguments[0]); i<len; i++)
          array.push(_fn?_fn(i):i);
        return array;
      },
      base:function(_number,_system){
        var remain = _number%_system;
        if(_number==remain)return String.fromCharCode(_number+(_number>9?87:48));
        return ((_number-remain)/_system).base(_system)+String.fromCharCode(remain+(remain>9?87:48));
      },
      decimal:function(_number,_system){
        var result = 0, digit = String(_number).split("");
        for(var i=0,len=digit.length; i<len; i++){
          digit[i]=parseInt((digit[i].charCodeAt(0)>58)?digit[i].charCodeAt(0)-87:digit[i]);
          result += digit[i]*(Math.pow(_system,digit.length-1-i));
        }
        return result;
      },
      random:function(_min,_max){
        while(true){
          var val = Math.round(Math.random()*(_max||0xfffffffffffffffff));
          if(!_min||val>=_min)
            break;
        }
        return val;
      }
    },
    String:{
      format:function(_str){
        var values = Array.prototype.slice.call(arguments,1);
        if(values.length==1&&pi.util.IsHash(values[1])){
          return this.replace(/\%\((\w+)\)/g,function(_match,_key){
            return values[0][_key];
          })
        };
        
        return _str.replace(/\{(\d)\}/g,function(){
          return values[arguments[1]];
        });
      },
      leftpad:function(_str,_len,_ch){
        var ch = Boolean(_ch)==false?" ":_ch; 
        while(_str.length<_len)
          _str=ch+_str;
        return _str;
      },
      unicode:function(_str){
        var str="", obj = _str.split("");
        var i=obj.length;
        while(i--)
          str="\\u{0}{1}".format(pi.util.String.leftpad(String(pi.util.Number.base(obj[i].charCodeAt(0),16)),4,"0"),str);
        return str;
      }
    },
    GetViewport:function(){
      return {
        height:document.documentElement.clientHeight||document.body.clientHeight,
        width:document.documentElement.clientWidth||document.body.clientWidth
      }
    }
  };
  
  pi.get = function(){
    return document.getElementById(arguments[0]);
  };
  pi.get.byTag = function(){
    return document.getElementsByTagName(arguments[0]);
  };
  pi.get.byClass = function(){ return document.getElementsByClassName.apply(document,arguments); };
  
  pi.base = function(){
    this.body = {};
    this.init = null;
    
    this.build = function(_skipClonning){
      var base = this, skipClonning = _skipClonning||false, _private = {},
        fn = function(){
          var _p = pi.util.Hash.clone(_private);
          if(!skipClonning){
            for(var key in this){
              if(pi.util.IsArray( this[ key ] ) ){
                this[key] = pi.util.Array.clone( this[key] );
              } else
                if( pi.util.IsHash(this[key]) ){
                  this[key] = pi.util.Hash.clone( 
                    this[ key ],
                    function(_key,_object){
                      this[ _key ]._parent_ = this;
                    }
                  );
                  //this[key]._parent_ = this;
                }
            }
          };
          base.createAccessors( _p, this );
          if(base.init)
            return base.init.apply(this,arguments);
          return this;
        };
      this.movePrivateMembers(this.body,_private);
      if(this.init){
        fn["$Init"] = this.init;
      };
      fn.prototype = this.body;
      return fn;
    };
    
    this.createAccessors = function(_p, _branch){
      var getter = function(_property){ return this[_property]; },
      setter = function(_property,_value){ this[_property] = _value; return _branch._parent_||_branch; };
  
      for (var name in _p) {
        var isPrivate = name.substring(0, 1) == "_", title = name.substring(1, 2).toUpperCase() + name.substring(2);
        
        if (isPrivate) {
          _branch[(_branch["get" + title]?"_":"")+"get" + title] = pi.util.Curry(getter,_p,name);
          _branch[(_branch["set" + title]?"_":"")+"set" + title] = pi.util.Curry(setter,_p,name);
        }
        else 
          if (pi.util.IsHash(_p[name])){
            _branch[name]._parent_ = _branch;
            if(!_branch[name])
              _branch[name] = {};
            this.createAccessors(_p[name], _branch[name]);
          }  
      };
    };
    
    this.movePrivateMembers = function(_object, _branch){
      for (var name in _object) {
        var isPrivate = name.substring(0, 1) == "_";
        
        if (isPrivate) {
          _branch[name] = _object[name];
          delete _object[name];
        }
        else 
          if (pi.util.IsHash(_object[name])){
            _branch[name] = {};
            this.movePrivateMembers(_object[name], _branch[name]);
          }
      };
    };
  };
  
  pi.element = new pi.base;
  pi.element.init = function(_val){
    this.environment.setElement(
      typeof _val=="string"||!_val?
        document.createElement(_val||"DIV"):
        _val
    );
    return this;
  };
  
  pi.element.body = {
    "addStyle":function(){
      return this.environment.addStyle.apply(this.environment,arguments);
    },
    "clean":function(){
      var childs = this.child.get();
      while(childs.length){
        childs[0].parentNode.removeChild(childs[0]);
      }
    },
    "clone":function(_deep){
      return this.environment.getElement().cloneNode(_deep);
    },
    "insert":function(_element){
      _element = _element.environment?_element.environment.getElement():_element;
      _element.appendChild(this.environment.getElement());
      return this;
    },
    "insertAfter":function(_referenceElement){      _referenceElement = _referenceElement.environment?_referenceElement.environment.getElement():_referenceElement;
      _referenceElement.nextSibling?this.insertBefore(_referenceElement.nextSibling):this.insert(_referenceElement.parentNode);
      return this;
    },
    "insertBefore":function(_referenceElement){
      _referenceElement = _referenceElement.environment?_referenceElement.environment.getElement():_referenceElement;
      _referenceElement.parentNode.insertBefore(this.environment.getElement(),_referenceElement);
      return this;
    },
    "query":function(_expression,_resultType,namespaceResolver,_result){
      return pi.xpath(_expression,_resultType||"ORDERED_NODE_SNAPSHOT_TYPE",this.environment.getElement(),_namespaceResolver,_result);
    },
    "remove":function(){
      if (this.environment.getParent()) {
        this.environment.getParent().removeChild(this.environment.getElement());
      }
    },
    "update":function(_value){
      this.element[this.element.nodeName.toLowerCase()=="textarea"||this.element.nodeName.toLowerCase()=="input"?"value":"innerHTML"]=_value;
      return this;
    },
    "attribute":{
      "getAll":function(){
        return this._parent_.environment.getElement().attributes;
      },
      "clear":function(_name){
        this.set(_name,"");
        return this._parent_;
      },
      "get":function(_name){
        return this._parent_.environment.getElement().getAttribute(_name);
      },
      "has":function(_name){
        return pi.env.ie?(this.get(_name)!=null):this._parent_.environment.getElement().hasAttribute(_name);
      },
      "remove":function(_name){
        this._parent_.environment.getElement().removeAttribute(_name);
        return this._parent_;
      },
      "set":function(_name,_value){
                if(pi.util.IsHash(arguments[0])){
                    for(var attributeName in arguments[0])
                        this._parent_.element.setAttribute(attributeName,arguments[0][attributeName]);
                } else
            this._parent_.environment.getElement().setAttribute(_name,_value);
        return this._parent_;
      },
      "addClass":function(_classes){
        for(var i=0,len=arguments.length; i<len; i++){
          pi.util.Element.addClass(this._parent_.environment.getElement(),arguments[i]);
        };
        return this._parent_;
      },
      "clearClass":function(){
        this.setClass("");
        this._parent_;
      },
      "getClass":function(){
        return pi.util.Element.getClass( this._parent_.environment.getElement() );
      },
      "hasClass":function(_class){
        return pi.util.Element.hasClass( this._parent_.environment.getElement(), _class );
      },
      "setClass":function(_value){
        return pi.util.Element.setClass( this._parent_.environment.getElement(), _value );
      },
      "removeClass":function(_class){
        pi.util.Element.removeClass( this._parent_.environment.getElement(), _class );
        return this._parent_;
      },
      "toggleClass":function(_class){
        pi.util.Element.toggleClass( this._parent_.environment.getElement(), _class );
      }
    },
    "child":{
      "get":function(){
        return this._parent_.environment.getElement().childNodes;
      },
      "add":function(_elements){
        for (var i = 0; i < arguments.length; i++) {
          var el = arguments[i];
          this._parent_.environment.getElement().appendChild(
            el.environment ? el.environment.getElement() : el
          );
        }
        return this._parent_;
      },
      "addAfter":function(_element,_referenceElement){
        this.addBefore(
          _element.environment?_element.environment.getElement():_element,
          (_referenceElement.environment?_referenceElement.environment.getElement():_referenceElement).nextSibling
        );
        return this._parent_;
      },
      "addBefore":function(_element,_referenceElement){
        this._parent_.environment.getElement().insertBefore(
          _element.environment?_element.environment.getElement():_element,
          _referenceElement.environment?_referenceElement.environment.getElement():_referenceElement
        );
        return this._parent_;
      },
      "remove":function(_element){
        this._parent_.environment.getElement().removeChild(_element.environment?_element.environment.getElement():_element);
      }
    },
    "environment":{
      "_element":null,
      "setElement":function(_value){
        this._parent_.element = _value;
        this._parent_.element.pi = this._parent_;
        this._setElement(_value);
      },
      "getParent":function(){
        return this.getElement().parentNode;
      },
      "getPosition":function(){
        return pi.util.Element.getPosition(this.getElement());
      },
      "getSize":function(){
        return pi.util.Element.getSize( this.getElement() );
      },
      "addStyle":function(_styleObject){
        pi.util.Element.addStyle(this.getElement(),_styleObject);
        return this._parent_;
      },
      "getStyle":function(_property){
        return pi.util.Element.getStyle(_property);
      },
      "getName":function(){
        return this.getElement().nodeName;
      },
      "getType":function(){
        return this.getElement().nodeType;
      },
      "getValue":function(){
        return pi.util.Element.getValue(this.getElement());
      },
      "getView":function(_property){
        return pi.util.Element.getView(this.getElement(),_property);
      }
    },
    "event":{
      "addListener":function(_event,_fn,_useCapture){
        pi.util.AddEvent(this._parent_.environment.getElement(),_event,_fn,_useCapture);
        return this._parent_;
      },
      "removeListener":function(_event,_fn,_useCapture){
        pi.util.RemoveEvent(this._parent_.environment.getElement(),_event,_fn,_useCapture);
        return this._parent_;
      }
    }
  };
  pi.element = pi.element.build();
  
  pi.xhr = new pi.base;
  pi.xhr.init = function(_url){
    if(!window.XMLHttpRequest){
      var names = ["Msxml2.XMLHTTP.6.0","Msxml2.XMLHTTP.3.0","Msxml2.XMLHTTP","Microsoft.XMLHTTP"];
      for (var i = 0; i < names.length; i++) {
        try {
          this.environment.setApi(new ActiveXObject(names[i]));
          break;
        } catch (e) { continue; }
      }
    }
    else
      this.environment.setApi(new XMLHttpRequest());
    this.environment.getApi().onreadystatechange=pi.util.Curry(this.event.readystatechange,this);
    this.environment.setUrl(_url);
    this.environment.setCallback([]);
    
    return this;
  };
  pi.xhr.body = {
    "addCallback": function(){
      return this.environment.addCallback.apply(this.environment,arguments);
    },
    "addData": function(){
      return this.environment.addData.apply(this.environment,arguments);
    },
    "abort":function(){
      this.environment.getApi().abort();
      return this;
    },
    "send":function(){
      var url = this.environment.getUrl(), data = this.environment.getData(),dataUrl = ""; 
      
      if(!this.environment.getCache())
        data["forceCache"] = Number(new Date);
        
      for (var key in data)
        dataUrl += pi.util.String.format("{0}={1}&",key, data[key]);
      
      if (this.environment.getType()=="GET")
        url += (url.search("\\?")==-1?"?":"&")+pi.util.String.format("{0}",dataUrl);
      
      this.api.open(this.environment.getType(),url,this.environment.getAsync());
      if(this.environment.getType()=="POST"){
        this.api.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
      };
      this.api.send(this.environment.getType()=="GET"?"":dataUrl);
      return this;
    }
  };
  pi.xhr.body.environment = {
    "_async":true, "_api":null, "_cache":true, "_callback":null, "_data":{}, "_type":"GET", "_url":"",
    "setApi":function(_value){
      this._parent_.api = _value;
      this._setApi(_value);
    },
    "addCallback": function(_readyState,_fn){
      this.getCallback().push({ "fn":_fn, "readyState":_readyState  });
      return this._parent_;
    },
    "addData": function(_key,_value){
      this.getData()[_key] = _value;
      return this._parent_;
    },
    "setType": function(_value){
      this._setType(_value);
      return this._parent_;
    }
  };
  pi.xhr.body.event = {
    "readystatechange":function(){
      var readyState = this.environment.getApi().readyState, callback=this.environment.getCallback();
      for (var i = 0, len=callback.length; i < len; i++) {
        if(pi.util.Array.indexOf(callback[i].readyState,readyState)>-1){
          callback[i].fn.apply(this);
        }
      }
    }
  };
  pi.xhr = pi.xhr.build();
  
  /*
   * xml.xhr.get
   */
  
  pi.xhr.get = function(_url,_returnPiObject){
    var request = new pi.xhr();
    request.environment.setAsync(false);
    request.environment.setUrl(_url);
    request.send();
    return _returnPiObject?request:request.environment.getApi();
  };
  
  /*
  Prototype on native javascript objects
  */
  Array.prototype.clone = function(_undeep){ return pi.util.Array.clone.call(window,this,_undeep); };
  Array.prototype.count = function(_value){ return pi.util.Array.count.call(window,this,_value); };
  Array.prototype.forEach = Array.prototype.forEach||function(_function){ return pi.util.Array.forEach.call(window,this,_function); };
  Array.prototype.getLatest = function(){  return pi.util.Array.getLatest.call(window,this); };
  Array.prototype.indexOf = Array.prototype.indexOf || function(_value){ return pi.util.Array.indexOf.call(window,this,_value); };
  Array.prototype.remove = function(_index){ return pi.util.Array.remove.call(window,this,_index); };
  Array.prototype.rotate = function(_value){ return pi.util.Array.rotate.call(window,this,_value); };
  
  Function.prototype.extend = function(_prototype,_skipClonning){ return pi.util.Extend.call(window,this,_prototype,_skipClonning); };
  Function.prototype.curry = function(_scope){ var arg=[this]; arg.push.apply(arg,arguments); return pi.util.Curry.apply(window,arg); };
  
  Number.prototype.base = function(){ return pi.util.Number.base( Number(this), arguments[0] ); };
  Number.prototype.decimal = function(){  return pi.util.Number.decimal( Number(this), arguments[0] ); };
  Number.prototype.random = function(_to){ var str = String(this), bite = str.split("."); return pi.util.Number.random(bite.length==1&&!_to?0:bite[0],bite[1]||_to||bite[0]); };
  Number.prototype.range = function(_to){ var str = String(this), bite = str.split("."); return pi.util.Number.range(bite.length==1&&!_to?0:Number(bite[0]),Number(bite[1]||_to||bite[0])); };
  
  String.prototype.format = function(){ var arg=[this]; arg.push.apply(arg,arguments); return pi.util.String.format.apply(window,arg) };
  String.prototype.leftpad = function(_len,_ch){ return pi.util.String.leftpad(this,_len,_ch); };
  String.prototype.unicode = function(){ return pi.util.String.unicode(this) };
  
  /*
   * registering onload event for init functions
   */
  pi.util.AddEvent(
    pi.env.ie?window:document,
    pi.env.ie?"load":"DOMContentLoaded",
    function(){
      for(var i=0,len=pi.util.Init.length; i<len; i++){
        pi.util.Init[ i ]();
      }
    }
  );
  
})(window);