/******************************************************************************
 *         This code is Copyright (C) 2006-2007 POP unless otherwise noted,   *
 *      and may not be used without explicit written permission from POP      *
 
 *  WARNING - THIS CODE IS CUSTOMIZED FOR MTC AND WILL NOT WORK          *
 *  ON OTHER SITES.  DO NOT ATTEMPT TO DUPLICATE OR YOUR ANALYTICS WILL BREAK *
 ******************************************************************************/

/**
 * Extends functionality but does not override if already present in oDestination
 * @param object oDestination The Object to augment
 * @param object oSource The Object Literal to augment oDestination with.
 */
Object.augment = function(oDestination, oSource) {
	for (var property in oSource) {
		if (typeof oDestination[property] == "undefined") {
			oDestination[property] = oSource[property];
		}
	}
	return oDestination;
}

Object.augment(String.prototype, {
	/**
	 * Prototype.js version of this was dependent on other Prototype.js Objects.
	 * Rewritten for Library independence.
	 * @author Dan Dean
	 * @return Object containing name/value pairs
	 * @return Value of supplied "key"
	 * @usage alert("firstname=dan&lastname=dean".toQueryParams()["lastname"]);
	 */
	toQueryParams: function() {
		var query_array =	this.substr(this.indexOf("?") + 1).split("&");
		var queryObj =		{};
		var query_count =	query_array.length;
		for (var i=0; i < query_count; i++) {
			query_pair = query_array[i].split("=");
			queryObj[query_pair[0]] = query_pair[1];
		}
		return queryObj;
	},
	
	contains: function(re, str) {
		if (str.search(re) != -1) {
			return true;
		} else {
			return false;
		}
	},
	getHostname: function() {
		return this.toString().replace(/^\w+\:\/\//,'').split('/')[0];
	}
});

/**
 * Augment the browser Array capabilities, where necessary
 * For a full explanation of JS Array capabilities, see the Array documentation:
 * http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference
 */
Object.augment(Array.prototype, {
	// FROM DECONCEPT
	// Adds one or more elements to the end of an array and returns the new length of the array.
	push: function(item) { // IE5
		this[this.length] = item;
		return this.length;
	},

	/**
	 * Adds and/or removes elements from an array.
	 * @param Number index	Index at which to start changing the array.
	 * @param Number count	An integer indicating the number of old array elements to remove.
	 * 				 		If count is 0, no elements are removed. In this case, you should specify at least one new element.
	 * @return Array An array containing the removed elements.
	 * FROM http://www.webreference.com/dhtml/column33/13.html
	 */
	splice: function(index,count){
		if(arguments.length == 0) return index;
		if(typeof index != "number") index = 0;
		if(index < 0) index = Math.max(0,this.length + index);
		if(index > this.length) {
			if(arguments.length > 2) index = this.length;
			else return [];
		}
		if(arguments.length < 2) count = this.length-index;
		count = (typeof count == "number") ? Math.max(0,count) : 0;
		removeArray = this.slice(index,index+count);
		endArray = this.slice(index+count);
		this.length = index;
		for(var i=2;i < arguments.length;i++){
			this[this.length] = arguments[i];
		}
		for(var i=0;i < endArray.length;i++){
			this[this.length] = endArray[i];
		}
		return removeArray;
	},

	/**
	 * Returns the first (least) index of an element within the array equal to the specified value, or -1 if none is found.
	 * @param Object obj Needle
	 * @param Number si Index to start search. Optional.
	 * FROM http://erik.eae.net
	 */
	indexOf: function (obj, si) {
		if (si == null) {
			si = 0;
		} else if (si < 0) {
			si = Math.max(0, this.length + si);
		}
		for (var i=si; i < this.length; i++) {
			if (this[i] === obj) { return i; }
		}
		return -1;
	},

	// Determines the existance of the needle in the stack
	contains: function (obj) {
		return this.indexOf(obj) != -1;
	},
	// Removes the first occurence of the supplied obj.
	remove: function (obj) {
		var i = this.indexOf(obj);
		if (i != -1) {
			this.splice(i, 1);
		}
	}
});


// INITIALIZE LIBRARY NAMESPACE
if (typeof window.PopJavaScriptFramework == "undefined") {
	PopJavaScriptFramework = new Object();
}
// INITIALIZE VERSION NAMESPACE
if (typeof window.PopJavaScriptFramework.v1B2 == 'undefined') {
	PopJavaScriptFramework.v1B2 = new Object();
}

/**
 * DOM
 * More advanced functionality will reside in an external dom.js file
 * @alias $dom
 */
PopJavaScriptFramework.v1B2.dom = {
	/**
	 * Create a new DOM node
	 * @param {String} nodeName 	The kind of node to create (div, br, p, etc);
	 * @param {Object} attributes	Optional object map of attributes and values. Example: {id: 'myEl', class: 'myClass'}
	 * @param {String} content	Optional text to set as the textNode within the returned element
	 * @param {Array} content		Optional array of Dom Nodes to insert as childNodes
	 * @param {NodeList content	Optional NodeList of Dom Nodes to insert as childNodes
	 * @return {DOMNode} DOMNode
	 * NOTE: dom.create is *heavily* influence by the prototype library
	 */
	create: function(nodeName /* obj attributes, str text */) {
		var node = document.createElement(nodeName);
		for (var i=1; i<arguments.length; i++) {
			if (typeof arguments[i] == 'string') { // STRING
				node.appendChild(this._text(arguments[i]));
			} else if (typeof arguments[i] == 'object' && typeof arguments[i].nodeName != 'undefined') { // NODE
				node.appendChild(arguments[i]);
			} else if (typeof arguments[i] == 'object' && typeof arguments[i].length != 'undefined') { // ARRAY OF NODES OR NODELIST
				for (var j=0; j<arguments[i].length; j++) {
					node.appendChild(arguments[i][j].cloneNode(true));
				}
			} else if (typeof arguments[i] == 'object') { // ATTRIBUTES
				this._attributes(node, arguments[i]);
			}
		}
		return node;
	},
	/**
	 * Cycles through the supplied attributes and applies them to the supplied element
	 * @param {DOMNode} node The node to apply attributes to
	 * @param {Object} attributes A JSON Object of attributes: {className:'myclass', id:'myID'}
	 * @return void
	 * WARNING: An attibute can NOT be named 'class', but must be 'className'
	 */
	_attributes: function(node, attributes) {
		for (var attr in attributes) {
			switch (true) {
				case (attr=='className'):
					node.className = attributes[attr];
					break;
				case (attr=='htmlFor'): // must pass htmlFor, as 'for' is a keyword
					node.htmlFor = attributes[attr];
					break;
				default:
					node.setAttribute(attr, attributes[attr]);
			}
		}
	},
	/**
	 * Creates and returns a text node with the supplied value
	 * @param {String} text
	 */
	_text: function(text) {
		return document.createTextNode(text);
	},
	
	/**
	 * Removes nodes from the DOM
	 * @param {String/Object} Elements The node you want to remove passed via Node OR ID string
	 * @return {Object/Array} The Element or an Array of Elements removed
	 * FIXME This method currently won't accept an Array of elements or element ID's
	 */
	remove: function(Elements) {
		var removed = new Array();
		for (var i=0; i<arguments.length; i++) {
			var el = (typeof arguments[i] == 'string') ? this.getById(arguments[i]) : arguments[i] ;
			removed.push(el.parentNode.removeChild(el));
		}
		return (removed.length > 1) ? removed : removed[0];
	},
	
	/**
	 * Gets the requested element(s).
	 * If you pass in a single string, returns FALSE on failure or the DOMNode
	 * on success. If you pass in many strings an Array of all found elements 
	 * is returned, which means an Empty array on failure
	 * @param {String} ElementIDs A comma-seperated list of element ID's
	 * @return Boolean/Array/DOMNode
	 */
	getById: function(ElementIDs) {
		var elements = new Array();
		var result;
		for (var i=0; i<arguments.length; i++) {
			var el;
			if (el = document.getElementById(arguments[i])) {
				elements.push(el);
			}
		}
		switch (true) {
			case (arguments.length == 1 && elements.length == 1):
				result = elements[0];
				break;
			case (arguments.length > 1):
				result = elements;
				break;
			default:
				result = false;
				break;
		}
		return result;
	},
	
	/**
	 * Returns an Array of all found elements by supplied tag name
	 * @param String ElementTagNames A comma seperated list of NodeNames
	 * @return Array An Array of all found elements. An empty Array on failure
	 */
	getByTag: function(ElementTagNames) {
		var elements = new Array();
		for (var i=0; i<arguments.length; i++) {
			els = document.getElementsByTagName(arguments[i]);
			for (var j=0; j<els.length; j++) {
				elements.push(els[j]);
			}
		}
		return elements;
	},
	
	/**
	 * Get all nodes with the given className
	 * @param String classNames A list of node.className(s) to check for
	 * @return An array of elements or an empty array on failure
	 */
	getByClass: function(classNames) {
		var o = new Array();
		var all = (typeof document.getElementsByTagName != 'undefined') ? document.getElementsByTagName('*') : document.all ;
		for (var i=0; i<all.length; i++) {
			(this.hasClass(all[i],arguments)) ? o.push(all[i]) : true ;
		}
		return o;
	},

	/**
	 * Add a class to an element
	 * @param Object node The element to work on
	 * @param String cls The class to add to the element
	 */
	addClass: function(node, cls) {
		var c = node.className.split(' ');
		(!c.contains(cls)) ? c.push(cls) : true ;
		node.className = c.join(' ');
	},

	/**
	 * Remove a class from an element
	 * @param Object node The element to work on
	 * @param String cls The class to remove from the element
	 */
	removeClass: function(node, cls) {
		var c = node.className.split(' ');
		(c.contains(cls)) ? c.remove(cls) : true ;
		node.className = c.join(' ');
	},
	
	/**
	 * Swap one class with another. If the first class doesn't exist the new 
	 * class is added.
	 * @param Object node The element to work on
	 * @param String sOldClass The class to swap out
	 * @param String sNewClass The class to swap in
	 */
	swapClass: function(node, sOldClass, sNewClass) {
		if (this.hasClass(node,sOldClass)) {
			this.removeClass(node, sOldClass);
		}
		this.addClass(node, sNewClass);
	},

	/**
	 * Check an element for the given className(s)
	 * @param {Object} node The node to check for a className
	 * @param {String} classNames A list of classNames to check for
	 * @return Boolean
	 */
	hasClass: function(node, classNames) {
		var args = arguments;
		var start = 1;
		if (typeof arguments[1] == 'object') {
			args = arguments[1];
			start = 0;
		}
		var success = false;
		for (var i=start; i<args.length; i++) {
			if (node.className.split(' ').contains(args[i])) {
				success = true;
				break;
			}
		}
		return success;
		// return (node.className.split(' ').contains(cls));
	},
	
	/**
	 * Gets a property from an elements computed style in a x-browser fashion
	 * @param DOMNode oNode The element to work on
	 * @param String sProperty The CSS property to find
	 */
	getComputedStyle: function(oNode, sProperty) {
		var computedStyle = null;
		if (typeof oNode.currentStyle != 'undefined') {
			computedStyle = oNode.currentStyle;
		} else {
			computedStyle = document.defaultView.getComputedStyle(oNode,null);
		}
		return computedStyle[sProperty];
	}
}
$dom = PopJavaScriptFramework.v1B2.dom;

/**
 * Add and Remove events from objects
 */
PopJavaScriptFramework.v1B2.event = {
	/**
	 * Adds an event to an object
	 * @param Object obj The object to attach an event to
	 * @param String type [load | blur | focus | etc]
	 * @param Function fn The function to call when the even fires
	 */
	add: function( obj, type, fn ) {
		if (obj.addEventListener) {
			obj.addEventListener( type, fn, false );
		} else if (obj.attachEvent) {
			obj["e"+type+fn] = fn;
			obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
			obj.attachEvent( "on"+type, obj[type+fn] );
		}		
	},
	/**
	 * The exact same as event.add, but removing instead of adding
	 */
	remove: function( obj, type, fn ) {
		if (obj.removeEventListener) {
			obj.removeEventListener( type, fn, false );
		} else if (obj.detachEvent) {
			obj.detachEvent( "on"+type, obj[type+fn] );
			obj[type+fn] = null;
			obj["e"+type+fn] = null;
		}
	},
	/**
	 * Stop an event from firing
	 * This does no work in Safari prior to 2.0.? (find webkit version)
	 */
	stop: function(e) {
		if (e) { // event object
			if (e.preventDefault) {	// W3C
				e.preventDefault();
				e.stopPropagation();
			} else {				// IE
				e.returnValue = false;
				e.cancelBubble = true;
			}
		} else {
		}
		return false;
	}
}