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 $() {
  var elements = new Array();

  for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);

    if (arguments.length == 1) 
      return element;

    elements.push(element);
  }

  return elements;
}
document.getElementsByClassName = function(className) {
  var children = document.getElementsByTagName('*') || document.all;
  var elements = new Array();
  
  for (var i = 0; i < children.length; i++) {
    var child = children[i];
    var classNames = child.className.split(' ');
    for (var j = 0; j < classNames.length; j++) {
      if (classNames[j] == className) {
        elements.push(child);
        break;
      }
    }
  }
  
  return elements;
}
if (!window.Element) {
  var Element = new Object();
}

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

  hasClassName: function(element, className) {
    element = $(element);
    if (!element)
      return;
    var a = element.className.split(' ');
    for (var i = 0; i < a.length; i++) {
      if (a[i] == className)
        return true;
    }
    return false;
  },

  addClassName: function(element, className) {
    element = $(element);
    Element.removeClassName(element, className);
    element.className += ' ' + className;
  },
  
  removeClassName: function(element, className) {
    element = $(element);
    if (!element)
      return;
    var newClassName = '';
    var a = element.className.split(' ');
    for (var i = 0; i < a.length; i++) {
      if (a[i] != className) {
        if (i > 0)
          newClassName += ' ';
        newClassName += a[i];
      }
    }
    element.className = newClassName;
  },
  cleanWhitespace: function(element) {
    element = $(element);
    for (var i = 0; i < element.childNodes.length; i++) {
      var node = element.childNodes[i];
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue)) 
        Element.remove(node);
    }
  }
});
ajax = Class.create();
ajax.prototype = {
        initialize: function(url, options){
                this.transport = this.getTransport();
                this.postBody = options.postBody || '';
                this.method = options.method || 'post';
                this.onComplete = options.onComplete || null;
                this.update = $(options.update) || null;
                this.request(url);
        },
        request: function(url){
		//alert(url);
                this.transport.open(this.method, url, true);
                this.transport.onreadystatechange = this.onStateChange.bind(this);
                if (this.method == 'post') {
                        this.transport.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
                        if (this.transport.overrideMimeType) this.transport.setRequestHeader('Connection', 'close');
                }
                this.transport.send(this.postBody);
        },
        onStateChange: function(){
                if (this.transport.readyState == 4 && this.transport.status == 200) {
                        if (this.onComplete) 
                                setTimeout(function(){this.onComplete(this.transport);}.bind(this), 10);
                        if (this.update)
                                setTimeout(function(){this.update.innerHTML = this.transport.responseText;}.bind(this), 10);
                        this.transport.onreadystatechange = function(){};
                }
        },
        getTransport: function() {
                if (window.ActiveXObject) return new ActiveXObject('Microsoft.XMLHTTP');
                else if (window.XMLHttpRequest) return new XMLHttpRequest();
                else return false;
        }
};


function changerating(request) {
        var response = request.responseText.split("||");
                                                               
        var rating=parseInt(response[2]);

        var sstr='';
        if (rating!=1) sstr='s';
	        
        document.getElementById('rating_button').innerHTML="<a href='#' onclick='return false;'>Click if you like this!</a><br><span class='votestr'>" + rating + " reader" + sstr + " liked it</span>";
        
        if (response[0]=='ERR') {
                alert(response[1]);

        }
        if (response[0]=='OK') {
                redrawratings(rating);
        }
        
}
function rate(id) {
	document.getElementById('rating_button').innerHTML='<i>Saving...</i>';
        
        new ajax('/rate-article.php', {postBody: 'id='+id, onComplete: changerating});
	
}
function redrawratings(count) {
        document.getElementById('rating_count').innerHTML=count;
}