/**
 * Flash (http://jquery.lukelutman.com/plugins/flash)
 * A jQuery plugin for embedding Flash movies.
 * 
 * Version 1.0
 * November 9th, 2006
 *
 * Copyright (c) 2006 Luke Lutman (http://www.lukelutman.com)
 * Dual licensed under the MIT and GPL licenses.
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.opensource.org/licenses/gpl-license.php
 * 
 * Inspired by:
 * SWFObject (http://blog.deconcept.com/swfobject/)
 * UFO (http://www.bobbyvandersluis.com/ufo/)
 * sIFR (http://www.mikeindustries.com/sifr/)
 * 
 * IMPORTANT: 
 * The packed version of jQuery breaks ActiveX control
 * activation in Internet Explorer. Use JSMin to minifiy
 * jQuery (see: http://jquery.lukelutman.com/plugins/flash#activex).
 *
 **/ 
;

(function(){
	
var $$;

/**
 * 
 * @desc Replace matching elements with a flash movie.
 * @author Luke Lutman
 * @version 1.0.1
 *
 * @name flash
 * @param Hash htmlOptions Options for the embed/object tag.
 * @param Hash pluginOptions Options for detecting/updating the Flash plugin (optional).
 * @param Function replace Custom block called for each matched element if flash is installed (optional).
 * @param Function update Custom block called for each matched if flash isn't installed (optional).
 * @type jQuery
 *
 * @cat plugins/flash
 * 
 * @example $('#hello').flash({ src: 'hello.swf' });
 * @desc Embed a Flash movie.
 *
 * @example $('#hello').flash({ src: 'hello.swf' }, { version: 8 });
 * @desc Embed a Flash 8 movie.
 *
 * @example $('#hello').flash({ src: 'hello.swf' }, { expressInstall: true });
 * @desc Embed a Flash movie using Express Install if flash isn't installed.
 *
 * @example $('#hello').flash({ src: 'hello.swf' }, { update: false });
 * @desc Embed a Flash movie, don't show an update message if Flash isn't installed.
 *
**/
$$ = jQuery.fn.flash = function(htmlOptions, pluginOptions, replace, update) {
	
	// Set the default block.
	var block = replace || $$.replace;
	
	// Merge the default and passed plugin options.
	pluginOptions = $$.copy($$.pluginOptions, pluginOptions);
	
	// Detect Flash.
	if(!$$.hasFlash(pluginOptions.version)) {
		// Use Express Install (if specified and Flash plugin 6,0,65 or higher is installed).
		if(pluginOptions.expressInstall && $$.hasFlash(6,0,65)) {
			// Add the necessary flashvars (merged later).
			var expressInstallOptions = {
				flashvars: {  	
					MMredirectURL: location,
					MMplayerType: 'PlugIn',
					MMdoctitle: jQuery('title').text() 
				}					
			};
		// Ask the user to update (if specified).
		} else if (pluginOptions.update) {
			// Change the block to insert the update message instead of the flash movie.
			block = update || $$.update;
		// Fail
		} else {
			// The required version of flash isn't installed.
			// Express Install is turned off, or flash 6,0,65 isn't installed.
			// Update is turned off.
			// Return without doing anything.
			return this;
		}
	}
	
	// Merge the default, express install and passed html options.
	htmlOptions = $$.copy($$.htmlOptions, expressInstallOptions, htmlOptions);
	
	// Invoke $block (with a copy of the merged html options) for each element.
	return this.each(function(){
		block.call(this, $$.copy(htmlOptions));
	});
	
};
/**
 *
 * @name flash.copy
 * @desc Copy an arbitrary number of objects into a new object.
 * @type Object
 * 
 * @example $$.copy({ foo: 1 }, { bar: 2 });
 * @result { foo: 1, bar: 2 };
 *
**/
$$.copy = function() {
	var options = {}, flashvars = {};
	for(var i = 0; i < arguments.length; i++) {
		var arg = arguments[i];
		if(arg == undefined) continue;
		jQuery.extend(options, arg);
		// don't clobber one flash vars object with another
		// merge them instead
		if(arg.flashvars == undefined) continue;
		jQuery.extend(flashvars, arg.flashvars);
	}
	options.flashvars = flashvars;
	return options;
};
/*
 * @name flash.hasFlash
 * @desc Check if a specific version of the Flash plugin is installed
 * @type Boolean
 *
**/
$$.hasFlash = function() {
	// look for a flag in the query string to bypass flash detection
	if(/hasFlash\=true/.test(location)) return true;
	if(/hasFlash\=false/.test(location)) return false;
	var pv = $$.hasFlash.playerVersion().match(/\d+/g);
	var rv = String([arguments[0], arguments[1], arguments[2]]).match(/\d+/g) || String($$.pluginOptions.version).match(/\d+/g);
	for(var i = 0; i < 3; i++) {
		pv[i] = parseInt(pv[i] || 0);
		rv[i] = parseInt(rv[i] || 0);
		// player is less than required
		if(pv[i] < rv[i]) return false;
		// player is greater than required
		if(pv[i] > rv[i]) return true;
	}
	// major version, minor version and revision match exactly
	return true;
};
/**
 *
 * @name flash.hasFlash.playerVersion
 * @desc Get the version of the installed Flash plugin.
 * @type String
 *
**/
$$.hasFlash.playerVersion = function() {
	// ie
	try {
		try {
			// avoid fp6 minor version lookup issues
			// see: http://blog.deconcept.com/2006/01/11/getvariable-setvariable-crash-internet-explorer-flash-6/
			var axo = new ActiveXObject('ShockwaveFlash.ShockwaveFlash.6');
			try { axo.AllowScriptAccess = 'always';	} 
			catch(err) { return '6,0,0'; }				
		} catch(err) {}
		return new ActiveXObject('ShockwaveFlash.ShockwaveFlash').GetVariable('$version').replace(/\D+/g, ',').match(/^,?(.+),?$/)[1];
	// other browsers
	} catch(err) {
		try {
			if(navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin){
				return (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]).description.replace(/\D+/g, ",").match(/^,?(.+),?$/)[1];
			}
		} catch(err) {}		
	}
	return '0,0,0';
};
/**
 *
 * @name flash.htmlOptions
 * @desc The default set of options for the object or embed tag.
 *
**/
$$.htmlOptions = {
	height: 240,
	flashvars: {},
	pluginspage: 'http://www.adobe.com/go/getflashplayer',
	src: '#',
	type: 'application/x-shockwave-flash',
	width: 320		
};
/**
 *
 * @name flash.pluginOptions
 * @desc The default set of options for checking/updating the flash Plugin.
 *
**/
$$.pluginOptions = {
	expressInstall: false,
	update: true,
	version: '6.0.65'
};
/**
 *
 * @name flash.replace
 * @desc The default method for replacing an element with a Flash movie.
 *
**/
$$.replace = function(htmlOptions) {
	this.innerHTML = '<div class="alt">'+this.innerHTML+'</div>';
	jQuery(this)
		.addClass('flash-replaced')
		.prepend($$.transform(htmlOptions));
};
/**
 *
 * @name flash.update
 * @desc The default method for replacing an element with an update message.
 *
**/
$$.update = function(htmlOptions) {
	var url = String(location).split('?');
	url.splice(1,0,'?hasFlash=true&');
	url = url.join('');
	var msg = '<p>This content requires the Flash Player. <a href="http://www.adobe.com/go/getflashplayer">Download Flash Player</a>. Already have Flash Player? <a href="'+url+'">Click here.</a></p>';
	this.innerHTML = '<span class="alt">'+this.innerHTML+'</span>';
	jQuery(this)
		.addClass('flash-update')
		.prepend(msg);
};
/**
 *
 * @desc Convert a hash of html options to a string of attributes, using Function.apply(). 
 * @example toAttributeString.apply(htmlOptions)
 * @result foo="bar" foo="bar"
 *
**/
function toAttributeString() {
	var s = '';
	for(var key in this)
		if(typeof this[key] != 'function')
			s += key+'="'+this[key]+'" ';
	return s;		
};
/**
 *
 * @desc Convert a hash of flashvars to a url-encoded string, using Function.apply(). 
 * @example toFlashvarsString.apply(flashvarsObject)
 * @result foo=bar&foo=bar
 *
**/
function toFlashvarsString() {
	var s = '';
	for(var key in this)
		if(typeof this[key] != 'function')
			s += key+'='+encodeURIComponent(this[key])+'&';
	return s.replace(/&$/, '');		
};
/**
 *
 * @name flash.transform
 * @desc Transform a set of html options into an embed tag.
 * @type String 
 *
 * @example $$.transform(htmlOptions)
 * @result <embed src="foo.swf" ... />
 *
 * Note: The embed tag is NOT standards-compliant, but it 
 * works in all current browsers. flash.transform can be
 * overwritten with a custom function to generate more 
 * standards-compliant markup.
 *
**/
$$.transform = function(htmlOptions) {
	htmlOptions.toString = toAttributeString;
	if(htmlOptions.flashvars) htmlOptions.flashvars.toString = toFlashvarsString;
	return '<embed ' + String(htmlOptions) + '/>';		
};

/**
 *
 * Flash Player 9 Fix (http://blog.deconcept.com/2006/07/28/swfobject-143-released/)
 *
**/
if (window.attachEvent) {
	window.attachEvent("onbeforeunload", function(){
		__flash_unloadHandler = function() {};
		__flash_savedUnloadHandler = function() {};
	});
}
	
})();

/*

This file contains only functions necessary for the article features
The full library code and enhanced versions of the functions present
here can be found at http://v2studio.com/k/code/lib/


ARRAY EXTENSIONS

push(item [,...,item])
    Mimics standard push for IE5, which doesn't implement it.


find(value [, start])
    searches array for value starting at start (if start is not provided,
    searches from the beginning). returns value index if found, otherwise
    returns -1;


has(value)
    returns true if value is found in array, otherwise false;


FUNCTIONAL

map(list, func)
    traverses list, applying func to list, returning an array of values returned
    by func

    if func is not provided, the array item is returned itself. this is an easy
    way to transform fake arrays (e.g. the arguments object of a function or
    nodeList objects) into real javascript arrays.

    map also provides a safe way for traversing only an array's indexed items,
    ignoring its other properties. (as opposed to how for-in works)

    this is a simplified version of python's map. parameter order is different,
    only a single list (array) is accepted, and the parameters passed to func
    are different:
    func takes the current item, then, optionally, the current index and a
    reference to the list (so that func can modify list)


filter(list, func)
    returns an array of values in list for which func is true

    if func is not specified the values are evaluated themselves, that is,
    filter will return an array of the values in list which evaluate to true

    this is a similar to python's filter, but parameter order is inverted


DOM

getElem(elem)
    returns an element in document. elem can be the id of such element or the
    element itself (in which case the function does nothing, merely returning
    it)

    this function is useful to enable other functions to take either an    element
    directly or an element id as parameter.

    if elem is string and there's no element with such id, it throws an error.
    if elem is an object but not an Element, it's returned anyway


hasClass(elem, className)
    Checks the class list of element elem or element of id elem for className,
    if found, returns true, otherwise false.

    The tested element can have multiple space-separated classes. className must
    be a single class (i.e. can't be a list).


getElementsByClass(className [, tagName [, parentNode]])
    Returns elements having class className, optionally being a tag tagName
    (otherwise any tag), optionally being a descendant of parentNode (otherwise
    the whole document is searched)


DOM EVENTS

listen(event,elem,func)
    x-browser function to add event listeners

    listens for event on elem with func
    event is string denoting the event name without the on- prefix. e.g. 'click'
    elem is either the element object or the element's id
    func is the function to call when the event is triggered

    in IE, func is wrapped and this wrapper passes in a W3CDOM_Event (a faux
    simplified Event object)


mlisten(event, elem_list, func)
    same as listen but takes an element list (a NodeList, Array, etc) instead of
    an element.


W3CDOM_Event(currentTarget)
    is a faux Event constructor. it should be passed in IE when a function
    expects a real Event object. For now it only implements the currentTarget
    property and the preventDefault method.

    The currentTarget value must be passed as a paremeter at the moment    of
    construction.


MISC CLEANING-AFTER-MICROSOFT STUFF

isUndefined(v)
    returns true if [v] is not defined, false otherwise

    IE 5.0 does not support the undefined keyword, so we cannot do a direct
    comparison such as v===undefined.
*/

// ARRAY EXTENSIONS

/* KSS 19/07/2007 Commented out as these were causing Coremetrics issues.

if (!Array.prototype.push) Array.prototype.push = function() {
    for (var i=0; i<arguments.length; i++) this[this.length] = arguments[i];
   return this.length;
}


if (!Array.prototype.find) Array.prototype.find = function(value, start) {
    start = start || 0;
    for (var i=start; i<this.length; i++)
        if (this[i]==value)
            return i;
    return -1;
}


if (!Array.prototype.has) Array.prototype.has = function(value) {
    return this.find(value)!==-1;
}
*/

// FUNCTIONAL

function map(list, func) {
    var result = [];
    func = func || function(v) {return v};
    for (var i=0; i < list.length; i++) result.push(func(list[i], i, list));
    return result;
}

function filter(list, func) {
    var result = [];
    func = func || function(v) {return v};
    map(list, function(v) { if (func(v)) result.push(v) } );
    return result;
}


// DOM

function getElem(elem) {
    if (document.getElementById) {
        if (typeof elem == "string") {
            elem = document.getElementById(elem);
            if (elem===null) throw 'cannot get element: element does not exist';
        } else if (typeof elem != "object") {
            throw 'cannot get element: invalid datatype';
        }
    } else throw 'cannot get element: unsupported DOM';
    return elem;
}

function hasClass(elem, className) {
    return getElem(elem).className.split(' ').has(className);
}

function getElementsByClass(className, tagName, parentNode) {
    parentNode = !isUndefined(parentNode)? getElem(parentNode) : document;
    if (isUndefined(tagName)) tagName = '*';
    return filter(parentNode.getElementsByTagName(tagName),
        function(elem) { return hasClass(elem, className) });
}


// DOM EVENTS

function listen(event, elem, func) {
    elem = getElem(elem);
    if (elem.addEventListener)  // W3C DOM
        elem.addEventListener(event,func,false);
    else if (elem.attachEvent)  // IE DOM
        elem.attachEvent('on'+event, function(){ func(new W3CDOM_Event(elem)) } );
        // for IE we use a wrapper function that passes in a simplified faux Event object.
    else throw 'cannot add event listener';
}

function mlisten(event, elem_list, func) {
    map(elem_list, function(elem) { listen(event, elem, func) } );
}

function W3CDOM_Event(currentTarget) {
    this.currentTarget  = currentTarget;
    this.preventDefault = function() { window.event.returnValue = false }
    return this;
}


// MISC CLEANING-AFTER-MICROSOFT STUFF

function isUndefined(v) {
    var undef;
    return v===undef;
}

function raw_popup(url, target, features) {
	var basic_features = 'location=1,statusbar=1,menubar=0,resizable=yes';
	
    if (isUndefined(features)) {
		features = basic_features;
	}else{
		features = basic_features + ',' + features;
	}
	
    if (isUndefined(target  )) target   = '_blank';
    var theWindow = window.open(url, target, features);
    theWindow.focus();
    return theWindow;
}

function link_popup(src, features) {
    // to be used in an html event handler as in: <a href="..." onclick="link_popup(this,...)" ...
    // pops up a window grabbing the url from the event source's href
    return raw_popup(src.getAttribute('href'), src.getAttribute('target') || '_blank', features);
}