/** 
 * flashembed 0.31. Adobe Flash embedding script
 * 
 * http://flowplayer.org/tools/flash-embed.html
 *
 * Copyright (c) 2008 Tero Piirainen (tipiirai@gmail.com)
 *
 * Released under the MIT License:
 * http://www.opensource.org/licenses/mit-license.php
 * 
 * >> Basically you can do anything you want but leave this header as is <<
 *
 * version 0.01 - 03/11/2008 
 * version 0.31 - Tue Jul 22 2008 06:30:34 GMT+0200 (GMT+02:00)
 */
function flashembed(root, userParams, flashvars) {	
	
	function getHTML() {
		
		var html = "";
		if (typeof flashvars == 'function') { flashvars = flashvars(); }
		
		
		// mozilla
		if (navigator.plugins && navigator.mimeTypes && navigator.mimeTypes.length) {  

			html = '<embed type="application/x-shockwave-flash" ';

			if (params.id) {
				extend(params, {name:params.id});
			}
			
			for (var key in params) { 
				if (params[key] !== null) { 
					html += [key] + '="' +params[key]+ '"\n\t';
				}
			}

			if (flashvars) {
				 html += 'flashvars=\'' + concatVars(flashvars) + '\'';
			}
			
			// thanks Tom Price (07/17/2008)
			html += '/>';
			
		// ie
		} else { 

			html = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" ';
			html += 'width="' + params.width + '" height="' + params.height + '"'; 
			
			// force id for IE. otherwise embedded Flash object cannot be returned
			if (!params.id && document.all) {
				params.id = "_" + ("" + Math.random()).substring(5);
			} 
			
			if (params.id) {html += ' id="' + params.id + '"';} 
			
			html += '>';  
			html += '\n\t<param name="movie" value="'+ params.src +'" />';
			
			params.id = params.src = params.width = params.height = null;
			
			for (var k in params) {
				if (params[k] !== null) {
					html += '\n\t<param name="'+ k +'" value="'+ params[k] +'" />';
				}
			}
			
			if (flashvars) {
				html += '\n\t<param name="flashvars" value=\'' + concatVars(flashvars) + '\' />';
			}
			 
			html += "</object>";
			if (debug) { 
				alert(html);
			}
			
		}  

		return html;
	}

	
	function init(name) {
		var timer = setInterval(function() {
			var doc = document;
			var el = doc.getElementById(name); 
			
			if (el) {
				flashembed(el, userParams, flashvars);
				clearInterval(timer); 
				
			} else if (doc && doc.getElementsByTagName && doc.getElementById && doc.body) {
				clearInterval(timer);
			}
		}, 13);
		
		return true;
	}

	
	// override extend params function 
	function extend(to, from) {
		if (from) {
			for (key in from) {
				if (from.hasOwnProperty(key)) {
					to[key] = from[key];
				}
			}
		}
	}		
	
	// setup params
	var params = {
		
		// very common params
		src: '#',
		width: '100%',
		height: '100%',		
		
		// flashembed specific options
		version:null,
		onFail:null,
		expressInstall:null,  
		debug: false,
		
		// flashembed defaults
		bgcolor: '#ffffff',
		allowfullscreen: true,
		allowscriptaccess: 'always',
		quality: 'high',
		type: 'application/x-shockwave-flash',
		pluginspage: 'http://www.adobe.com/go/getflashplayer'
	};
	
	
	if (typeof userParams == 'string') {
		userParams = {src: userParams};	
	}
	
	extend(params, userParams);			 
		
	var version = flashembed.getVersion(); 
	var required = params.version; 
	var express = params.expressInstall;		 
	var debug = params.debug;

	
	if (typeof root == 'string') {  
		var el = document.getElementById(root);
		if (el) {
			root = el;	
		} else {
			return init(root);		
		} 
	}
	
	if (!root) { return; }
	
	
	// is supported 
	if (!required || flashembed.isSupported(required)) {
		params.onFail = params.version = params.expressInstall = params.debug = null; 
		root.innerHTML = getHTML();	
		
		// return our API			
		return root.firstChild;
		
	// custom fail event
	} else if (params.onFail) {
		var ret = params.onFail.call(params, flashembed.getVersion(), flashvars);
		if (ret) { root.innerHTML = ret; }		
		

	// express install
	} else if (required && express && flashembed.isSupported([6,65])) {
		
		extend(params, {src: express});
		
		flashvars = {
			MMredirectURL: location.href,
			MMplayerType: 'PlugIn',
			MMdoctitle: document.title
		};
		
		root.innerHTML = getHTML();	
		
	// not supported
	} else {

		// minor bug fixed here 08.04.2008 (thanks JRodman)
		
		if (root.innerHTML.replace(/\s/g, '') !== '') {
			// custom content was supplied
		
		} else {
			root.innerHTML = 
				"<h2>Flash version " + required + " or greater is required</h2>" + 
				"<h3>" + 
					(version[0] > 0 ? "Your version is " + version : "You have no flash plugin installed") +
				"</h3>" + 
				"<p>Download latest version from <a href='" + params.pluginspage + "'>here</a></p>";
		}
	}
	
	
	function concatVars(vars) {		
		var out = "";
		
		for (var key in vars) { 
			if (vars[key]) {
				out += [key] + '=' + vars[key] + '&';
			}
		}			
		return out.substring(0, out.length -1);				
	}  
	
	
	
	// JSON.asString() function
	function asString(obj) {

		switch (typeOf(obj)){
			case 'string':
				return '"'+obj.replace(new RegExp('(["\\\\])', 'g'), '\\$1')+'"';
				
			case 'array':
				return '['+ map(obj, function(el) {
					return asString(el);
				}).join(',') +']'; 
				
			case 'function':
				return '"function()"';
				
			case 'object':
				var str = [];
				for (var prop in obj) {
					if (obj.hasOwnProperty(prop)) {
						str.push('"'+prop+'":'+ asString(obj[prop]));
					}
				}
				return '{'+str.join(',')+'}';
		}
		
		// replace ' --> "  and remove spaces
		return String(obj).replace(/\s/g, " ").replace(/\'/g, "\"");
	}
	
	
	// private functions
	function typeOf(obj) {
		if (obj === null || obj === undefined) { return false; }
		var type = typeof obj;
		return (type == 'object' && obj.push) ? 'array' : type;
	}
	
	
	// version 9 bugfix: (http://blog.deconcept.com/2006/07/28/swfobject-143-released/)
	if (window.attachEvent) {
		window.attachEvent("onbeforeunload", function() {
			__flash_unloadHandler = function() {};
			__flash_savedUnloadHandler = function() {};
		});
	}
	
	function map(arr, func) {
		var newArr = []; 
		for (var i in arr) {
			if (arr.hasOwnProperty(i)) {
				newArr[i] = func(arr[i]);
			}
		}
		return newArr;
	}

	return root;
}



// setup jquery support
if (typeof jQuery == 'function') {
	
	(function($) { 
		$.fn.extend({
			flashembed: function(params, flashvars) {  
				return this.each(function() { 
					flashembed(this, params, flashvars);
				});
			}		
		}); 
	})(jQuery);
}


flashembed = flashembed || {};

// arr[major, minor, fix]
flashembed.getVersion = function() {

	var version = [0, 0];
	
	if (navigator.plugins && typeof navigator.plugins["Shockwave Flash"] == "object") {
		var _d = navigator.plugins["Shockwave Flash"].description;
		if (typeof _d != "undefined") {
			_d = _d.replace(/^.*\s+(\S+\s+\S+$)/, "$1");
			var _m = parseInt(_d.replace(/^(.*)\..*$/, "$1"), 10);
			var _r = /r/.test(_d) ? parseInt(_d.replace(/^.*r(.*)$/, "$1"), 10) : 0;
			version = [_m, _r];
		}
		
	} else if (window.ActiveXObject) {
		
		try { // avoid fp 6 crashes
			var _a = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
			
		} catch(e) {
			try { 
				_a = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");
				version = [6, 0];
				_a.AllowScriptAccess = "always"; // throws if fp < 6.47 
				
			} catch(ee) {
				if (version[0] == 6) { return; }
			}
			try {
				_a = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
			} catch(eee) {
			
			}
			
		}
		
		if (typeof _a == "object") {
			_d = _a.GetVariable("$version"); // bugs in fp 6.21 / 6.23
			if (typeof _d != "undefined") {
				_d = _d.replace(/^\S+\s+(.*)$/, "$1").split(",");
				version = [parseInt(_d[0], 10), parseInt(_d[2], 10)];
			}
		}
	} 
	
	return version;
};


flashembed.isSupported = function(version) {
	var now = flashembed.getVersion();
	var ret = (now[0] > version[0]) || (now[0] == version[0] && now[1] >= version[1]);			
	return ret;
};


