/**
* 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 (e) { return '6,0,0'; }
			} catch (e) { }
			return new ActiveXObject('ShockwaveFlash.ShockwaveFlash').GetVariable('$version').replace(/\D+/g, ',').match(/^,?(.+),?$/)[1];
			// other browsers
		} catch (e) {
			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 (e) { }
		}
		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() { };
		});
	}

})();