/**
 * cutlass_config is not included part of the library.  Instead it is an object
 * that can be defined by the implementer immediately before including the
 * YUI library.  The properties included in this object will be used to
 * configure global properties needed as soon as the library begins to load.
 * @class cutlass_config
 * @static
 */

/**
 * A reference to a function that will be executed every time a cutlass module
 * is loaded.  As parameter, this function will receive the version
 * information for the module. See <a href="cutlass.env.html#getVersion">
 * cutlass.env.getVersion</a> for the description of the version data structure.
 * @property listener
 * @static
 */
if (typeof spx == "undefined") {
    /**
     * The spx global namespace object.  If spx is already defined, the
     * existing spx object will not be overwritten so that defined
     * namespaces are preserved.
     * @class spx
     * @static
     */
    var spx = {};
}

/**
 * Returns the namespace specified and creates it if it doesn't exist
 * <pre>
 * spx.namespace("property.package");
 * spx.namespace("spx.property.package");
 * </pre>
 * Either of the above would create spx.property, then
 * spx.property.package
 *
 * Be careful when naming packages. Reserved words may work in some browsers
 * and not others. For instance, the following will fail in Safari:
 * <pre>
 * spx.namespace("really.long.nested.namespace");
 * </pre>
 * This fails because "long" is a future reserved word in ECMAScript
 *
 * @method namespace
 * @static
 * @param  {String*} arguments 1-n namespaces to create 
 * @return {Object}  A reference to the last namespace object created
 */
spx.namespace = function() {
    var a=arguments, o=null, i, j, d;
    for (i=0; i<a.length; i=i+1) {
        d=a[i].split(".");
        o=spx;

        // spx is implied, so it is ignored if it is included
        for (j=(d[0] == "spx") ? 1 : 0; j<d.length; j=j+1) {
            o[d[j]]=o[d[j]] || {};
            o=o[d[j]];
        }
    }

    return o;
};

/**
 * Uses spx.widget.Logger to output a log message, if the widget is
 * available.
 *
 * @method log
 * @static
 * @param  {String}  msg  The message to log.
 * @param  {String}  cat  The log category for the message.  Default
 *                        categories are "info", "warn", "error", time".
 *                        Custom categories can be used as well. (opt)
 * @param  {String}  src  The source of the the message (opt)
 * @return {Boolean}      True if the log operation was successful.
 */
spx.log = function(msg, cat, src) {
    var l=spx.widget.Logger;
    if(l && l.log) {
        return l.log(msg, cat, src);
    } else {
        return false;
    }
};

/**
 * Initializes the global by creating the default namespaces and applying
 * any new configuration information that is detected.
 * @method init
 * @static
 */
spx.init = function() {
    this.namespace("util", "widget", "search");
    if (typeof spx_config != "undefined") {
        var l=spx_config.listener,ls=spx.env.listeners,unique=true,i;
        if (l) {
            // if spx is loaded multiple times we need to check to see if
            // this is a new config object.  If it is, add the new component
            // load listener to the stack
            for (i=0;i<ls.length;i=i+1) {
                if (ls[i]==l) {
                    unique=false;
                    break;
                }
            }
            if (unique) {
                ls.push(l);
            }
        }
    }

};

/**
 * Registers a module with the spx object
 * @method register
 * @static
 * @param {String}   name    the name of the module (event, slider, etc)
 * @param {Function} mainClass a reference to class in the module.  This
 *                             class will be tagged with the version info
 *                             so that it will be possible to identify the
 *                             version that is in use when multiple versions
 *                             have loaded
 * @param {Object}   data      metadata object for the module.  Currently it
 *                             is expected to contain a "version" property
 *                             and a "build" property at minimum.
 */
spx.register = function(name, mainClass, data) {
    var mods = spx.env.modules;
    if (!mods[name]) {
        mods[name] = { versions:[], builds:[] };
    }
    var m=mods[name],v=data.version,b=data.build,ls=spx.env.listeners;
    m.name = name;
    m.version = v;
    m.build = b;
    m.versions.push(v);
    m.builds.push(b);
    m.mainClass = mainClass;
    // fire the module load listeners
    for (var i=0;i<ls.length;i=i+1) {
        ls[i](m);
    }
    // label the main class
    if (mainClass) {
        mainClass.VERSION = v;
        mainClass.BUILD = b;
    } else {
        spx.log("mainClass is undefined for module " + name, "warn");
    }
};

/**
 * spx.env is used to keep track of what is known about the YUI library and
 * the browsing environment
 * @class spx.env
 * @type Object
 * @static
 */
spx.env = spx.env || {
    /**
     * Keeps the version info for all YUI modules that have reported themselves
     * @property modules
     * @type Object[]
     */
    modules: [],
    
    /**
     * List of functions that should be executed every time a YUI module
     * reports itself.
     * @property listeners
     * @type Function[]
     */
    listeners: [],
    
    /**
     * Returns the version data for the specified module:
     *      <dl>
     *      <dt>name:</dt>      <dd>The name of the module</dd>
     *      <dt>version:</dt>   <dd>The version in use</dd>
     *      <dt>build:</dt>     <dd>The build number in use</dd>
     *      <dt>versions:</dt>  <dd>All versions that were registered</dd>
     *      <dt>builds:</dt>    <dd>All builds that were registered.</dd>
     *      <dt>mainClass:</dt> <dd>An object that was was stamped with the
     *                 current version and build. If 
     *                 mainClass.VERSION != version or mainClass.BUILD != build,
     *                 multiple versions of pieces of the library have been
     *                 loaded, potentially causing issues.</dd>
     *       </dl>
     *
     * @method getVersion
     * @static
     * @param {String}  name the name of the module (event, slider, etc)
     * @return {Object} The version info
     */
    getVersion: function(name) {
        return spx.env.modules[name] || null;
    }
};

/**
 * Provides the language utilites and extensions used by the library
 * @class spx.lang
 */
spx.lang = {
    /**
     * Determines whether or not the provided object is an array
     * @method isArray
     * @param {any} obj The object being testing
     * @return Boolean
     */
    isArray: function(obj) { // frames lose type, so test constructor string
        if (obj && obj.constructor && 
                   obj.constructor.toString().indexOf('Array') > -1) {
            return true;
        } else {
            return spx.lang.isObject(obj) && obj.constructor == Array;
        }
    },

    /**
     * Determines whether or not the provided object is a boolean
     * @method isBoolean
     * @param {any} obj The object being testing
     * @return Boolean
     */
    isBoolean: function(obj) {
        return typeof obj == 'boolean';
    },
    
    /**
     * Determines whether or not the provided object is a function
     * @method isFunction
     * @param {any} obj The object being testing
     * @return Boolean
     */
    isFunction: function(obj) {
        return typeof obj == 'function';
    },
        
    /**
     * Determines whether or not the provided object is null
     * @method isNull
     * @param {any} obj The object being testing
     * @return Boolean
     */
    isNull: function(obj) {
        return obj === null;
    },
        
    /**
     * Determines whether or not the provided object is a legal number
     * @method isNumber
     * @param {any} obj The object being testing
     * @return Boolean
     */
    isNumber: function(obj) {
        return typeof obj == 'number' && isFinite(obj);
    },
      
    /**
     * Determines whether or not the provided object is of type object
     * or function
     * @method isObject
     * @param {any} obj The object being testing
     * @return Boolean
     */  
    isObject: function(obj) {
        return obj && (typeof obj == 'object' || spx.lang.isFunction(obj));
    },
        
    /**
     * Determines whether or not the provided object is a string
     * @method isString
     * @param {any} obj The object being testing
     * @return Boolean
     */
    isString: function(obj) {
        return typeof obj == 'string';
    },
        
    /**
     * Determines whether or not the provided object is undefined
     * @method isUndefined
     * @param {any} obj The object being testing
     * @return Boolean
     */
    isUndefined: function(obj) {
        return typeof obj == 'undefined';
    },
    
    /**
     * Determines whether or not the property was added
     * to the object instance.  Returns false if the property is not present
     * in the object, or was inherited from the prototype.
     * This abstraction is provided to enable hasOwnProperty for Safari 1.3.x.
     * There is a discrepancy between spx.lang.hasOwnProperty and
     * Object.prototype.hasOwnProperty when the property is a primitive added to
     * both the instance AND prototype with the same value:
     * <pre>
     * var A = function() {};
     * A.prototype.foo = 'foo';
     * var a = new A();
     * a.foo = 'foo';
     * alert(a.hasOwnProperty('foo')); // true
     * alert(spx.lang.hasOwnProperty(a, 'foo')); // false when using fallback
     * </pre>
     * @method hasOwnProperty
     * @param {any} obj The object being testing
     * @return Boolean
     */
    hasOwnProperty: function(obj, prop) {
        if (Object.prototype.hasOwnProperty) {
            return obj.hasOwnProperty(prop);
        }
        
        return !spx.lang.isUndefined(obj[prop]) && 
                obj.constructor.prototype[prop] !== obj[prop];
    },
        
    /**
     * Utility to set up the prototype, constructor and superclass properties to
     * support an inheritance strategy that can chain constructors and methods.
     *
     * @method extend
     * @static
     * @param {Function} subc   the object to modify
     * @param {Function} superc the object to inherit
     * @param {Object} overrides  additional properties/methods to add to the
     *                              subclass prototype.  These will override the
     *                              matching items obtained from the superclass 
     *                              if present.
     */
    extend: function(subc, superc, overrides) {
        if (!superc||!subc) {
            throw new Error("spx.lang.extend failed, please check that " +
                            "all dependencies are included.");
        }
        var F = function() {};
        F.prototype=superc.prototype;
        subc.prototype=new F();
        subc.prototype.constructor=subc;
        subc.superclass=superc.prototype;
        if (superc.prototype.constructor == Object.prototype.constructor) {
            superc.prototype.constructor=superc;
        }
    
        if (overrides) {
            for (var i in overrides) {
                subc.prototype[i]=overrides[i];
            }
        }
    },
    
    /**
     * Applies all prototype properties in the supplier to the receiver if the
     * receiver does not have these properties yet.  Optionally, one or more
     * methods/properties can be specified (as additional parameters).  This
     * option will overwrite the property if receiver has it already.
     *
     * @method augment
     * @static
     * @param {Function} r  the object to receive the augmentation
     * @param {Function} s  the object that supplies the properties to augment
     * @param {String*}  arguments zero or more properties methods to augment the
     *                             receiver with.  If none specified, everything
     *                             in the supplier will be used unless it would
     *                             overwrite an existing property in the receiver
     */
    augment: function(r, s) {
        if (!s||!r) {
            throw new Error("spx.lang.augment failed, please check that " +
                            "all dependencies are included.");
        }
        var rp=r.prototype, sp=s.prototype, a=arguments, i, p;
        if (a[2]) {
            for (i=2; i<a.length; i=i+1) {
                rp[a[i]] = sp[a[i]];
            }
        } else {
            for (p in sp) { 
                if (!rp[p]) {
                    rp[p] = sp[p];
                }
            }
        }
    }
};

spx.init();

/*
 * An alias for <a href="spx.lang.html">spx.lang</a>
 * @class spx.util.Lang
 */
spx.util.Lang = spx.lang;

/**
 * An alias for <a href="spx.lang.html#augment">spx.lang.augment</a>
 * @for spx
 * @method augment
 * @static
 * @param {Function} r  the object to receive the augmentation
 * @param {Function} s  the object that supplies the properties to augment
 * @param {String*}  arguments zero or more properties methods to augment the
 *                             receiver with.  If none specified, everything
 *                             in the supplier will be used unless it would
 *                             overwrite an existing property in the receiver
 */
spx.augment = spx.lang.augment;
       
/**
 * An alias for <a href="spx.lang.html#extend">spx.lang.extend</a>
 * @method extend
 * @static
 * @param {Function} subc   the object to modify
 * @param {Function} superc the object to inherit
 * @param {Object} overrides  additional properties/methods to add to the
 *                              subclass prototype.  These will override the
 *                              matching items obtained from the superclass 
 *                              if present.
 */
spx.extend = spx.lang.extend;

spx.util.DecodeEntity = function(str) {
	var s = str.replace(/&lt;/gi, "<");
	s = s.replace(/&gt;/gi, ">");
	s = s.replace(/&amp;/gi, "&");
	return s;
}

spx.util.QueryString = function(qs) {
	this.params = new Object();
	this.get=Querystring_get
	
	if (qs == null)
		qs=location.search.substring(1,location.search.length)

	if (qs.length == 0) return

	// Turn <plus> back to <space>
	// See: http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.13.4.1
	qs = qs.replace(/\+/g, ' ')
	var args = qs.split('&') // parse out name/value pairs separated via &
	
	// split out each name=value pair
	for (var i=0;i<args.length;i++) {
		var value;
		var pair = args[i].split('=')
		var name = unescape(pair[0])

		if (pair.length == 2)
			value = unescape(pair[1])
		else
			value = name
		
		this.params[name] = value
	}
}

spx.util.Querystring_get = function (key, default_) {
	// This silly looking line changes UNDEFINED to NULL
	if (default_ == null) default_ = null;
	
	var value=this.params[key]
	if (value==null) value=default_;
	
	return value
}

spx.search.SearchParameter =
{
	query:null,
	
	collections:new Array(),
	
	fields:new Array(),
	
	page:1,
	
	//Default Page Size
	pageSize:10,
	
	cat:false,
	
	enablePopularKeywords:false,
	
	kwic:false,
	
	kwicFields:new Array(),
	
	dateField:null,
	
	startDate:null,
	
	endDate:null,
	
	top:5,
	
	setQuery:function(query) {
		//this.query = encodeURI(query);
		this.query = query;
	},
	
	getQuery:function() {
		return this.query;
	},
	
	setCollections:function(cols) {
		this.collections = cols;
		//this.collections.addAll(cols); //Problem?
	},
	
	getCollections:function() {
		return this.collections;
	},
	
	addCollection:function(col) {
		this.collections[this.collections.length] = col;
	},
	
	getPageSize:function() {
		return this.pageSize;
	},
	
	setPageSize:function(pageSize) {
		this.pageSize = pageSize;
	},
	
	addField:function(field) {
		this.fields[this.fields.length] = field;
	},
	
	clearFields:function() {
		this.fields.clear();
	},
	
	getPage:function() {
		return this.page;
	},
	
	setPage:function(page) {
		this.page = page;
	},

	setSearchByCollection:function(cat) {
		this.cat = cat;
	},
	
	isSearchByCollection:function() {
		return this.cat;
	},
	
	setEnablePopularKeywords:function(enablePopularKeywords) {
		this.enablePopularKeywords = enablePopularKeywords;
	},
	
	isEnablePopularKeywords:function() {
		return this.enablePopularKeywords;
	},
	
	setKwic:function(kwic) {
		this.kwic = kwic;
	},
	
	isKwic:function() {
		return this.kwic;
	},
	
	addKwicField:function(field) {
		this.kwicFields[this.kwicFields.length] = field;
	},
	
	setTop:function(top) {
		this.top = top;
	},
	
	getTop:function() {
		return this.top;
	},
	
	setDateField:function(dateField) {
		this.dateField = dateField;
	},
	
	setStartDate:function(startDate) {
		this.startDate = startDate;
	},
	
	setEndDate:function(endDate) {
		this.endDate = endDate;
	},
	
	buildQueryString:function(isEncode) {
		var queryString = "";
		if (this.fields.isEmpty()) {
			if (isEncode)
			{
				queryString = "?q=" + encodeURI(this.query);
			}			
			else {
				queryString = "?q=" + this.query;
			}
		}
		else {
			queryString = "?q=";
			for (var i = 0; i < this.fields.length; i++) {
				if (i == this.fields.length - 1) {
					queryString += this.fields[i] + ":(" + encodeURI(this.query) + ")&";
				}
				//Only 'AND'?
				else {
					queryString += this.fields[i] + ":(" + encodeURI(this.query) + ") OR ";
				}
			}
		}
		queryString.trim();
		
		//set date range
		if (this.dateField != null && this.startDate != null && this.endDate != null) {
			queryString += "%20" + this.dateField + ":[" + this.startDate + "%20TO%20" + this.endDate + "]";
		}
		queryString += "&";
		
		for (var i = 0; i < this.collections.length; i++) {
			queryString += "col=" + this.collections[i] + "&";
		}	
			
		queryString += "page=" + this.getPage() + "&pageSize=" + this.pageSize;
		
		if (this.isSearchByCollection()) {		
			queryString += "&cat=true";
		}
		
		if (this.isEnablePopularKeywords()) {
			queryString += "&pok=true&top=" + this.getTop();
		}
		
		if (this.isKwic()) {
			queryString += "&kwic=true";
			for (var i = 0; i < this.kwicFields.length; i++) {
				queryString += "&kwicField=" + this.kwicFields[i];
			}
		}
		
		queryString += "&output=json";

		return queryString;
	}
}

spx.url = null;

spx.search.Searcher = 
{
	url: null,
	
	callback: null,
	
	setUrl:function(url) {
		this.url = url;
	},
	
	setCallback:function(callback) {
		this.callback = callback;
	},
	
	search:function(isEncode) {		
  		if (this.checkQueryString()) {
  			if (eval(spx.search.Searcher.before)) {
				spx.search.Searcher.before();
			}
			var queryString = spx.search.SearchParameter.buildQueryString(isEncode);		
			var transaction = spx.util.Connect.asyncRequest('GET', this.url + queryString, this.callback, null); 
		}
	},
	
	//parse?
	checkQueryString:function() {
		if (spx.search.SearchParameter.getQuery() == null) {
			throw new Error('IllegalArgumentException: Query not found');
			//throw "IllegalArgumentException: Query not found";
		}
		else if (spx.search.SearchParameter.getCollections().length == 0) {
			throw new Error('IllegalArgumentException: Collection must be an Array object');
		}
		
		return true;
	}
	
}

spx.register("spx", spx, {version: "2.0.0", build: "0"});

/**
 * Array Prototype
 *
 */
 
Array.prototype.addAll = function (that) {
	this.clear();
	for (var i = 0; i < that.length; i++) {
		this[i] = that[i];
	}
};
 
 /**
 *  @param Array that
 *  @returns boolean
 *  @throws IllegalArgumentException
 */
Array.prototype.containsAll = function (that) {
    if (that.constructor != Array) {
        throw 'IllegalArgumentException: Parameter to Array.prototype.containsAll() must be an Array object';
    }
    for (var i = 0; i < that.length; i++) {
        if (!this.contains(that[i])) {
            return false;
        }
    }
    return true;
};

/**
 *  @return void
 *  Removes all of the elements from this Array.
 */
Array.prototype.clear = function () {
    this.length = 0;
};

/**
 *  @return boolean
 *  Returns true if this collection contains no elements
 */
Array.prototype.isEmpty = function () {
    return this.length == 0;
};

String.prototype.trim = function() { 
	return this.replace(/^\s+|\s+$/g,'') 
};




/*
Copyright (c) 2007, MEGAZONE Inc. All rights reserved.
version: 2.0.0
*/
/**
 * The Connection Manager provides a simplified interface to the XMLHttpRequest
 * object.  It handles cross-browser instantiantion of XMLHttpRequest, negotiates the
 * interactive states and server response, returning the results to a pre-defined
 * callback you create.
 *
 * @namespace spx.util
 * @module connection
 * @requires yahoo
 */

/**
 * The Connection Manager singleton provides methods for creating and managing
 * asynchronous transactions.
 *
 * @class Connect
 */

spx.util.Connect =
{
  /**
   * @description Array of MSFT ActiveX ids for XMLHttpRequest.
   * @property _msxml_progid
   * @private
   * @static
   * @type array
   */
	_msxml_progid:[
		'MSXML2.XMLHTTP.3.0',
		'MSXML2.XMLHTTP',
		'Microsoft.XMLHTTP'
		],

  /**
   * @description Object literal of HTTP header(s)
   * @property _http_header
   * @private
   * @static
   * @type object
   */
	_http_headers:{},

  /**
   * @description Determines if HTTP headers are set.
   * @property _has_http_headers
   * @private
   * @static
   * @type boolean
   */
	_has_http_headers:false,

 /**
  * @description Determines if a default header of
  * Content-Type of 'application/x-www-form-urlencoded'
  * will be added to any client HTTP headers sent for POST
  * transactions.
  * @property _use_default_post_header
  * @private
  * @static
  * @type boolean
  */
    _use_default_post_header:true,

 /**
  * @description Determines if a default header of
  * Content-Type of 'application/x-www-form-urlencoded'
  * will be added to client HTTP headers sent for POST
  * transactions.
  * @property _default_post_header
  * @private
  * @static
  * @type boolean
  */
    _default_post_header:'application/x-www-form-urlencoded; charset=utf-8',

 /**
  * @description Determines if a default header of
  * 'X-Requested-With: XMLHttpRequest'
  * will be added to each transaction.
  * @property _use_default_xhr_header
  * @private
  * @static
  * @type boolean
  */
    _use_default_xhr_header:true,

 /**
  * @description The default header value for the label
  * "X-Requested-With".  This is sent with each
  * transaction, by default, to identify the
  * request as being made by YUI Connection Manager.
  * @property _default_xhr_header
  * @private
  * @static
  * @type boolean
  */
    _default_xhr_header:'XMLHttpRequest',

 /**
  * @description Determines if custom, default headers
  * are set for each transaction.
  * @property _has_default_header
  * @private
  * @static
  * @type boolean
  */
    _has_default_headers:true,

 /**
  * @description Determines if custom, default headers
  * are set for each transaction.
  * @property _has_default_header
  * @private
  * @static
  * @type boolean
  */
    _default_headers:{},

 /**
  * @description Property modified by setForm() to determine if the data
  * should be submitted as an HTML form.
  * @property _isFormSubmit
  * @private
  * @static
  * @type boolean
  */
    _isFormSubmit:false,

 /**
  * @description Property modified by setForm() to determine if a file(s)
  * upload is expected.
  * @property _isFileUpload
  * @private
  * @static
  * @type boolean
  */
    _isFileUpload:false,

 /**
  * @description Property modified by setForm() to set a reference to the HTML
  * form node if the desired action is file upload.
  * @property _formNode
  * @private
  * @static
  * @type object
  */
    _formNode:null,

 /**
  * @description Property modified by setForm() to set the HTML form data
  * for each transaction.
  * @property _sFormData
  * @private
  * @static
  * @type string
  */
    _sFormData:null,

 /**
  * @description Collection of polling references to the polling mechanism in handleReadyState.
  * @property _poll
  * @private
  * @static
  * @type object
  */
    _poll:{},

 /**
  * @description Queue of timeout values for each transaction callback with a defined timeout value.
  * @property _timeOut
  * @private
  * @static
  * @type object
  */
    _timeOut:{},

  /**
   * @description The polling frequency, in milliseconds, for HandleReadyState.
   * when attempting to determine a transaction's XHR readyState.
   * The default is 50 milliseconds.
   * @property _polling_interval
   * @private
   * @static
   * @type int
   */
     _polling_interval:50,

  /**
   * @description A transaction counter that increments the transaction id for each transaction.
   * @property _transaction_id
   * @private
   * @static
   * @type int
   */
     _transaction_id:0,

  /**
   * @description Tracks the name-value pair of the "clicked" submit button if multiple submit
   * buttons are present in an HTML form; and, if spx.util.Event is available.
   * @property _submitElementValue
   * @private
   * @static
   * @type string
   */
	 _submitElementValue:null,

  /**
   * @description Determines whether spx.util.Event is available and returns true or false.
   * If true, an event listener is bound at the document level to trap click events that
   * resolve to a target type of "Submit".  This listener will enable setForm() to determine
   * the clicked "Submit" value in a multi-Submit button, HTML form.
   * @property _hasSubmitListener
   * @private
   * @static
   * @type boolean
   */
	 _hasSubmitListener:(function()
	 {
		if(spx.util.Event){
			spx.util.Event.addListener(
				document,
				'click',
				function(e){
					var obj = spx.util.Event.getTarget(e);
					if(obj.type == 'submit'){
						spx.util.Connect._submitElementValue = encodeURIComponent(obj.name) + "=" + encodeURIComponent(obj.value);
					}
				})
			return true;
	    }
	    return false;
	 })(),

  /**
   * @description Member to add an ActiveX id to the existing xml_progid array.
   * In the event(unlikely) a new ActiveX id is introduced, it can be added
   * without internal code modifications.
   * @method setProgId
   * @public
   * @static
   * @param {string} id The ActiveX id to be added to initialize the XHR object.
   * @return void
   */
	setProgId:function(id)
	{
		this._msxml_progid.unshift(id);
	},

  /**
   * @description Member to enable or disable the default POST header.
   * @method setDefaultPostHeader
   * @public
   * @static
   * @param {boolean} b Set and use default header - true or false .
   * @return void
   */
	setDefaultPostHeader:function(b)
	{
		this._use_default_post_header = b;
	},

  /**
   * @description Member to enable or disable the default POST header.
   * @method setDefaultXhrHeader
   * @public
   * @static
   * @param {boolean} b Set and use default header - true or false .
   * @return void
   */
	setDefaultXhrHeader:function(b)
	{
		this._use_default_xhr_header = b;
	},

  /**
   * @description Member to modify the default polling interval.
   * @method setPollingInterval
   * @public
   * @static
   * @param {int} i The polling interval in milliseconds.
   * @return void
   */
	setPollingInterval:function(i)
	{
		if(typeof i == 'number' && isFinite(i)){
			this._polling_interval = i;
		}
	},

  /**
   * @description Instantiates a XMLHttpRequest object and returns an object with two properties:
   * the XMLHttpRequest instance and the transaction id.
   * @method createXhrObject
   * @private
   * @static
   * @param {int} transactionId Property containing the transaction id for this transaction.
   * @return object
   */
	createXhrObject:function(transactionId)
	{
		var obj,http;
		try
		{
			// Instantiates XMLHttpRequest in non-IE browsers and assigns to http.
			http = new XMLHttpRequest();
			//  Object literal with http and tId properties
			obj = { conn:http, tId:transactionId };
		}
		catch(e)
		{
			for(var i=0; i<this._msxml_progid.length; ++i){
				try
				{
					// Instantiates XMLHttpRequest for IE and assign to http.
					http = new ActiveXObject(this._msxml_progid[i]);
					//  Object literal with conn and tId properties
					obj = { conn:http, tId:transactionId };
					break;
				}
				catch(e){}
			}
		}
		finally
		{
			return obj;
		}
	},

  /**
   * @description This method is called by asyncRequest to create a
   * valid connection object for the transaction.  It also passes a
   * transaction id and increments the transaction id counter.
   * @method getConnectionObject
   * @private
   * @static
   * @return {object}
   */
	getConnectionObject:function()
	{
		var o;
		var tId = this._transaction_id;

		try
		{
			o = this.createXhrObject(tId);
			if(o){
				this._transaction_id++;
			}
		}
		catch(e){}
		finally
		{
			return o;
		}
	},

  /**
   * @description Method for initiating an asynchronous request via the XHR object.
   * @method asyncRequest
   * @public
   * @static
   * @param {string} method HTTP transaction method
   * @param {string} uri Fully qualified path of resource
   * @param {callback} callback User-defined callback function or object
   * @param {string} postData POST body
   * @return {object} Returns the connection object
   */
	asyncRequest:function(method, uri, callback, postData)
	{
		var o = this.getConnectionObject();

		if(!o){
			return null;
		}
		else{
			if(this._isFormSubmit){
				if(this._isFileUpload){
					this.uploadFile(o.tId, callback, uri, postData);
					this.releaseObject(o);

					return;
				}

				//If the specified HTTP method is GET, setForm() will return an
				//encoded string that is concatenated to the uri to
				//create a querystring.
				if(method.toUpperCase() == 'GET'){
					if(this._sFormData.length != 0){
						// If the URI already contains a querystring, append an ampersand
						// and then concatenate _sFormData to the URI.
						uri += ((uri.indexOf('?') == -1)?'?':'&') + this._sFormData;
					}
					else{
						uri += "?" + this._sFormData;
					}
				}
				else if(method.toUpperCase() == 'POST'){
					//If POST data exist in addition to the HTML form data,
					//it will be concatenated to the form data.
					postData = postData?this._sFormData + "&" + postData:this._sFormData;
				}
			}

			o.conn.open(method, uri, true);

			if(this._use_default_xhr_header){
				if(!this._default_headers['X-Requested-With']){
					this.initHeader('X-Requested-With', this._default_xhr_header, true);
				}
			}
			if(this._isFormSubmit || (postData && this._use_default_post_header)){
				this.initHeader('Content-Type', this._default_post_header);
				if(this._isFormSubmit){
					this.resetFormState();
				}
			}

			if(this._has_default_headers || this._has_http_headers){
				this.setHeader(o);
			}

			this.handleReadyState(o, callback);
			o.conn.send(postData || null);

			return o;
		}
	},

  /**
   * @description This method serves as a timer that polls the XHR object's readyState
   * property during a transaction, instead of binding a callback to the
   * onreadystatechange event.  Upon readyState 4, handleTransactionResponse
   * will process the response, and the timer will be cleared.
   * @method handleReadyState
   * @private
   * @static
   * @param {object} o The connection object
   * @param {callback} callback The user-defined callback object
   * @return {void}
   */
    handleReadyState:function(o, callback)
    {
		var oConn = this;

		if(callback && callback.timeout){
			this._timeOut[o.tId] = window.setTimeout(function(){ oConn.abort(o, callback, true); }, callback.timeout);
		}

		this._poll[o.tId] = window.setInterval(
			function(){
				if(o.conn && o.conn.readyState === 4){
					window.clearInterval(oConn._poll[o.tId]);
					delete oConn._poll[o.tId];

					if(callback && callback.timeout){
						delete oConn._timeOut[o.tId];
					}

					oConn.handleTransactionResponse(o, callback);
				}
			}
		,this._polling_interval);
    },

  /**
   * @description This method attempts to interpret the server response and
   * determine whether the transaction was successful, or if an error or
   * exception was encountered.
   * @method handleTransactionResponse
   * @private
   * @static
   * @param {object} o The connection object
   * @param {object} callback The sser-defined callback object
   * @param {boolean} isAbort Determines if the transaction was aborted.
   * @return {void}
   */
    handleTransactionResponse:function(o, callback, isAbort)
    {
    	if(eval(spx.search.Searcher.after)) {
			spx.search.Searcher.after();
		}
			
		// If no valid callback is provided, then do not process any callback handling.
		if(!callback){
			this.releaseObject(o);
			return;
		}

		var httpStatus, responseObject;

		try
		{
			//if(o.conn.status !== undefined && o.conn.status !== 0){
			if(o.conn.status !== undefined){
				httpStatus = o.conn.status;
			}
			else{
				httpStatus = 13030;
			}
		}
		catch(e){

			 // 13030 is the custom code to indicate the condition -- in Mozilla/FF --
			 // when the o object's status and statusText properties are
			 // unavailable, and a query attempt throws an exception.
			httpStatus = 13030;
		}

//		alert(httpStatus);
		//if(httpStatus >= 200 && httpStatus < 300 || httpStatus === 1223){
		if(httpStatus == 200 || httpStatus == 0){
			responseObject = this.createResponseObject(o, callback.argument);
			
			if(callback.success){
				if(!callback.scope){
					callback.success(responseObject);
				}
				else{
					// If a scope property is defined, the callback will be fired from
					// the context of the object.
					callback.success.apply(callback.scope, [responseObject]);
				}
			}			
		}
		else{
			switch(httpStatus){
				// The following cases are wininet.dll error codes that may be encountered.
				case 12002: // Server timeout
				case 12029: // 12029 to 12031 correspond to dropped connections.
				case 12030:
				case 12031:
				case 12152: // Connection closed by server.
				case 13030: // See above comments for variable status.
					responseObject = this.createExceptionObject(o.tId, callback.argument, (isAbort?isAbort:false));
					if(callback.failure){
						if(!callback.scope){
							callback.failure(responseObject);
						}
						else{
							callback.failure.apply(callback.scope, [responseObject]);
						}
					}
					break;
				default:
					responseObject = this.createResponseObject(o, callback.argument);
					if(callback.failure){
						if(!callback.scope){
							callback.failure(responseObject);
						}
						else{
							callback.failure.apply(callback.scope, [responseObject]);
						}
					}
			}
		}

		this.releaseObject(o);
		responseObject = null;
    },

  /**
   * @description This method evaluates the server response, creates and returns the results via
   * its properties.  Success and failure cases will differ in the response
   * object's property values.
   * @method createResponseObject
   * @private
   * @static
   * @param {object} o The connection object
   * @param {callbackArg} callbackArg The user-defined argument or arguments to be passed to the callback
   * @return {object}
   */
    createResponseObject:function(o, callbackArg)
    {
		var obj = {};
		var headerObj = {};

		try
		{
			var headerStr = o.conn.getAllResponseHeaders();
			var header = headerStr.split('\n');
			for(var i=0; i<header.length; i++){
				var delimitPos = header[i].indexOf(':');
				if(delimitPos != -1){
					headerObj[header[i].substring(0,delimitPos)] = header[i].substring(delimitPos+2);
				}
			}
		}
		catch(e){
		}

		obj.tId = o.tId;
		// Normalize IE's response to HTTP 204 when Win error 1223.
		obj.status = (o.conn.status == 1223)?204:o.conn.status;
		// Normalize IE's statusText to "No Content" instead of "Unknown".
		obj.statusText = (o.conn.status == 1223)?"No Content":o.conn.statusText;
		obj.getResponseHeader = headerObj;
		obj.getAllResponseHeaders = headerStr;
		obj.responseText = o.conn.responseText;
		obj.responseXML = o.conn.responseXML;
		//Search Result Bind
		var responseText = obj.responseText.replace(/<highlight>/gi, "<span class=spx-result-highlight>");		
		responseText = responseText.replace(/<\\\/highlight>/ig, "</span>");
		//Binding Error
		try
		{
			obj.searchResult = eval("(" + responseText + ")");
		} catch (e) {
			obj.status = -1;
			return obj;
		}
		obj.searchResult.getQuery = function() {
			return this["results"]["query"];
		};
		
		obj.searchResult.getHits = function() {
			return this["results"]["hits"];
		};
		
		obj.searchResult.getCurrentPage = function() {
			return this["results"]["currentpage"];
		};
		
		obj.searchResult.getLastPage = function() {
			return this["results"]["lastpage"];
		};
		
		obj.searchResult.getStart = function() {
			return this["results"]["start"];
		};
		
		obj.searchResult.getEnd = function() {			
			return this["results"]["end"];
		};
		obj.searchResult.getTime = function() {
			return this["results"]["time"];
		};
		obj.searchResult.getPopularKeywords = function() {
			var pok = this["results"]["popularkeywords"];
			if (!pok) {
				return null;
			}
			else {
				return pok;
			}
		}
		
		obj.searchResult.getResults = function() {
			if (spx.search.SearchParameter.isSearchByCollection()) {
				return this["results"]["collections"];
			}
			else {
				return this["results"]["result"];
			}
		};

		if(typeof callbackArg !== undefined){
			obj.argument = callbackArg;
		}		

		return obj;
    },

  /**
   * @description If a transaction cannot be completed due to dropped or closed connections,
   * there may be not be enough information to build a full response object.
   * The failure callback will be fired and this specific condition can be identified
   * by a status property value of 0.
   *
   * If an abort was successful, the status property will report a value of -1.
   *
   * @method createExceptionObject
   * @private
   * @static
   * @param {int} tId The Transaction Id
   * @param {callbackArg} callbackArg The user-defined argument or arguments to be passed to the callback
   * @param {boolean} isAbort Determines if the exception case is caused by a transaction abort
   * @return {object}
   */
    createExceptionObject:function(tId, callbackArg, isAbort)
    {
		var COMM_CODE = 0;
		var COMM_ERROR = 'communication failure';
		var ABORT_CODE = -1;
		var ABORT_ERROR = 'transaction aborted';

		var obj = {};

		obj.tId = tId;
		if(isAbort){
			obj.status = ABORT_CODE;
			obj.statusText = ABORT_ERROR;
		}
		else{
			obj.status = COMM_CODE;
			obj.statusText = COMM_ERROR;
		}

		if(callbackArg){
			obj.argument = callbackArg;
		}

		return obj;
    },

  /**
   * @description Method that initializes the custom HTTP headers for the each transaction.
   * @method initHeader
   * @public
   * @static
   * @param {string} label The HTTP header label
   * @param {string} value The HTTP header value
   * @param {string} isDefault Determines if the specific header is a default header
   * automatically sent with each transaction.
   * @return {void}
   */
	initHeader:function(label,value,isDefault)
	{
		var headerObj = (isDefault)?this._default_headers:this._http_headers;

		if(headerObj[label] === undefined){
			headerObj[label] = value;
		}
		else{
			// Concatenate multiple values, comma-delimited,
			// for the same header label,
			headerObj[label] =  value + "," + headerObj[label];
		}

		if(isDefault){
			this._has_default_headers = true;
		}
		else{
			this._has_http_headers = true;
		}
	},


  /**
   * @description Accessor that sets the HTTP headers for each transaction.
   * @method setHeader
   * @private
   * @static
   * @param {object} o The connection object for the transaction.
   * @return {void}
   */
	setHeader:function(o)
	{
		if(this._has_default_headers){
			for(var prop in this._default_headers){
				if(spx.lang.hasOwnProperty(this._default_headers,prop)){
					o.conn.setRequestHeader(prop, this._default_headers[prop]);
				}
			}
		}

		if(this._has_http_headers){
			for(var prop in this._http_headers){
				if(spx.lang.hasOwnProperty(this._http_headers,prop)){
					o.conn.setRequestHeader(prop, this._http_headers[prop]);
				}
			}
			delete this._http_headers;

			this._http_headers = {};
			this._has_http_headers = false;
		}
	},

  /**
   * @description Resets the default HTTP headers object
   * @method resetDefaultHeaders
   * @public
   * @static
   * @return {void}
   */
	resetDefaultHeaders:function(){
		delete this._default_headers
		this._default_headers = {};
		this._has_default_headers = false;
	},

  /**
   * @description This method assembles the form label and value pairs and
   * constructs an encoded string.
   * asyncRequest() will automatically initialize the
   * transaction with a HTTP header Content-Type of
   * application/x-www-form-urlencoded.
   * @method setForm
   * @public
   * @static
   * @param {string || object} form id or name attribute, or form object.
   * @param {string} optional boolean to indicate SSL environment.
   * @param {string || boolean} optional qualified path of iframe resource for SSL in IE.
   * @return {string} string of the HTML form field name and value pairs..
   */
	setForm:function(formId, isUpload, secureUri)
	{
		this.resetFormState();
		var oForm;
		if(typeof formId == 'string'){
			// Determine if the argument is a form id or a form name.
			// Note form name usage is deprecated by supported
			// here for legacy reasons.
			oForm = (document.getElementById(formId) || document.forms[formId]);
		}
		else if(typeof formId == 'object'){
			// Treat argument as an HTML form object.
			oForm = formId;
		}
		else{
			return;
		}

		// If the isUpload argument is true, setForm will call createFrame to initialize
		// an iframe as the form target.
		//
		// The argument secureURI is also required by IE in SSL environments
		// where the secureURI string is a fully qualified HTTP path, used to set the source
		// of the iframe, to a stub resource in the same domain.
		if(isUpload){

			// Create iframe in preparation for file upload.
			this.createFrame(secureUri?secureUri:null);

			// Set form reference and file upload properties to true.
			this._isFormSubmit = true;
			this._isFileUpload = true;
			this._formNode = oForm;

			return;
		}

		var oElement, oName, oValue, oDisabled;
		var hasSubmit = false;

		// Iterate over the form elements collection to construct the
		// label-value pairs.
		for (var i=0; i<oForm.elements.length; i++){
			oElement = oForm.elements[i];
			oDisabled = oForm.elements[i].disabled;
			oName = oForm.elements[i].name;
			oValue = oForm.elements[i].value;

			// Do not submit fields that are disabled or
			// do not have a name attribute value.
			if(!oDisabled && oName)
			{
				switch (oElement.type)
				{
					case 'select-one':
					case 'select-multiple':
						for(var j=0; j<oElement.options.length; j++){
							if(oElement.options[j].selected){
								if(window.ActiveXObject){
									this._sFormData += encodeURIComponent(oName) + '=' + encodeURIComponent(oElement.options[j].attributes['value'].specified?oElement.options[j].value:oElement.options[j].text) + '&';
								}
								else{
									this._sFormData += encodeURIComponent(oName) + '=' + encodeURIComponent(oElement.options[j].hasAttribute('value')?oElement.options[j].value:oElement.options[j].text) + '&';
								}

							}
						}
						break;
					case 'radio':
					case 'checkbox':
						if(oElement.checked){
							this._sFormData += encodeURIComponent(oName) + '=' + encodeURIComponent(oValue) + '&';
						}
						break;
					case 'file':
						// stub case as XMLHttpRequest will only send the file path as a string.
					case undefined:
						// stub case for fieldset element which returns undefined.
					case 'reset':
						// stub case for input type reset button.
					case 'button':
						// stub case for input type button elements.
						break;
					case 'submit':
						if(hasSubmit === false){
							if(this._hasSubmitListener){
								this._sFormData += this._submitElementValue + '&';
							}
							else{
								this._sFormData += encodeURIComponent(oName) + '=' + encodeURIComponent(oValue) + '&';
							}

							hasSubmit = true;
						}
						break;
					default:
						this._sFormData += encodeURIComponent(oName) + '=' + encodeURIComponent(oValue) + '&';
						break;
				}
			}
		}

		this._isFormSubmit = true;
		this._sFormData = this._sFormData.substr(0, this._sFormData.length - 1);


		return this._sFormData;
	},

  /**
   * @description Resets HTML form properties when an HTML form or HTML form
   * with file upload transaction is sent.
   * @method resetFormState
   * @private
   * @static
   * @return {void}
   */
	resetFormState:function(){
		this._isFormSubmit = false;
		this._isFileUpload = false;
		this._formNode = null;
		this._sFormData = "";
	},

  /**
   * @description Parses the POST data and creates hidden form elements
   * for each key-value, and appends them to the HTML form object.
   * @method appendPostData
   * @private
   * @static
   * @param {string} postData The HTTP POST data
   * @return {array} formElements Collection of hidden fields.
   */
	appendPostData:function(postData)
	{
		var formElements = [];
		var postMessage = postData.split('&');
		for(var i=0; i < postMessage.length; i++){
			var delimitPos = postMessage[i].indexOf('=');
			if(delimitPos != -1){
				formElements[i] = document.createElement('input');
				formElements[i].type = 'hidden';
				formElements[i].name = postMessage[i].substring(0,delimitPos);
				formElements[i].value = postMessage[i].substring(delimitPos+1);
				this._formNode.appendChild(formElements[i]);
			}
		}

		return formElements;
	},

  /**
   * @description Method to terminate a transaction, if it has not reached readyState 4.
   * @method abort
   * @public
   * @static
   * @param {object} o The connection object returned by asyncRequest.
   * @param {object} callback  User-defined callback object.
   * @param {string} isTimeout boolean to indicate if abort was a timeout.
   * @return {boolean}
   */
	abort:function(o, callback, isTimeout)
	{
		if(this.isCallInProgress(o)){
			o.conn.abort();
			window.clearInterval(this._poll[o.tId]);
			delete this._poll[o.tId];
			if(isTimeout){
				delete this._timeOut[o.tId];
			}

			this.handleTransactionResponse(o, callback, true);

			return true;
		}
		else{
			return false;
		}
	},

  /**
   * Public method to check if the transaction is still being processed.
   *
   * @method isCallInProgress
   * @public
   * @static
   * @param {object} o The connection object returned by asyncRequest
   * @return {boolean}
   */
	isCallInProgress:function(o)
	{
		// if the XHR object assigned to the transaction has not been dereferenced,
		// then check its readyState status.  Otherwise, return false.
		if(o.conn){
			return o.conn.readyState !== 4 && o.conn.readyState !== 0;
		}
		else{
			//The XHR object has been destroyed.
			return false;
		}
	},

  /**
   * @description Dereference the XHR instance and the connection object after the transaction is completed.
   * @method releaseObject
   * @private
   * @static
   * @param {object} o The connection object
   * @return {void}
   */
	releaseObject:function(o)
	{
		//dereference the XHR instance.
		o.conn = null;
		//dereference the connection object.
		o = null;
	}
};

spx.register("connection", spx.util.Connect, {version: "2.2.2", build: "0"});