// ----------------------------------------------------------------------
// Flash Detection (adapted from official Adobe offering)
// ----------------------------------------------------------------------

var isIE  	= !!(navigator.appVersion.indexOf("MSIE") > -1);
var isWin 	= !!(navigator.appVersion.toLowerCase().indexOf("win") > -1);
var isOpera = !!(navigator.userAgent.indexOf("Opera") > -1);
var isWinIE = !!(isIE && isWin && !isOpera);

function flashGetVersion_ActiveX() {
	var value;
	var axobj;
	var funcs = [
		function() { axobj = new ActiveXObject('ShockwaveFlash.ShockwaveFlash.7'); value = axobj.GetVariable('$version'); },
		function() {
			axobj = new ActiveXObject('ShockwaveFlash.ShockwaveFlash.6');

			// Installed player is some revision of 6.0, but GetVariable('$version')
			// crashes for versions 6.0.22 through 6.0.29 so we have to be careful.

			// Default to the first public version
			value = 'WIN 6,0,21,0';

			// Throws if AllowScriptAccess does not exist (introduced in 6.0r47)
			axobj.AllowScriptAccess = 'always';

			// Safe to call for 6.0r47 or greater
			value = axobj.GetVariable('$version');
		},
		function() { axobj = new ActiveXObject('ShockwaveFlash.ShockwaveFlash.3'); value = axobj.GetVariable('$version'); },
		function() { axobj = new ActiveXObject('ShockwaveFlash.ShockwaveFlash.3'); value = 'WIN 3,0,18,0'; },
		function() { axobj = new ActiveXObject('ShockwaveFlash.ShockwaveFlash'); value = 'WIN 2,0,0,11'; }
	];

	for (i=0; i<funcs.length; i++) {
		try { funcs[i](); break; } catch(e) {}
	}

	return (value) ? value : -1;
}

function flashGetVersion() {
	var version = false;
	var lowerUserAgent = navigator.userAgent.toLowerCase();

	// NS/Opera version >= 3 check for Flash plugin in plugins array

	if (navigator.plugins != null && navigator.plugins.length > 0) {
		if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
			var flashPlugin = navigator.plugins["Shockwave Flash"] || navigator.plugins["Shockwave Flash 2.0"];
			var descArray = flashPlugin.description.split(" ");
			var tempArrayMajor = descArray[2].split(".");
			var major = tempArrayMajor[0];
			var minor = tempArrayMajor[1];
			if ( descArray[3] != "" ) {
				tempArrayMinor = descArray[3].split("r");
			} else {
				tempArrayMinor = descArray[4].split("r");
			}
			var revision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
			var version = major + "." + minor + "." + revision;
		}
	} else if (lowerUserAgent.indexOf("webtv/2.6") > -1) { version = 4; // MSN/WebTV 2.6 supports Flash 4
	} else if (lowerUserAgent.indexOf("webtv/2.5") > -1) { version = 3; // WebTV 2.5 supports Flash 3
	} else if (lowerUserAgent.indexOf("webtv") > -1) 	 { version = 2; // Older WebTV supports Flash 2
	} else if (isWinIE) 								 { version = flashGetVersion_ActiveX(); }

	return version;
}

function flashDetect(reqMajorVer, reqMinorVer, reqRevision) {
	var reqMinorVer = reqMinorVer || 0;
	var reqRevision = reqRevision || 0;

	var hasVersion = false;
	var versionStr = flashGetVersion();

	if (versionStr != -1 && versionStr != 0) {
		if (isWinIE) {
			// Given "WIN 2,0,0,11"
			tempArray		= versionStr.split(" "); // ["WIN", "2,0,0,11"]
			tempString		= tempArray[1];			 // "2,0,0,11"
			versionArray	= tempString.split(","); // ['2', '0', '0', '11']
		} else {
			versionArray	= versionStr.split(".");
		}
		var versionMajor      = versionArray[0];
		var versionMinor      = versionArray[1];
		var versionRevision   = versionArray[2];

		if (versionMajor > parseFloat(reqMajorVer)) {
			hasVersion = true;
		} else if (versionMajor == parseFloat(reqMajorVer)) {
			if (versionMinor > parseFloat(reqMinorVer)) {
				hasVersion = true;
			} else if (versionMinor == parseFloat(reqMinorVer)) {
				if (versionRevision >= parseFloat(reqRevision)) {
					hasVersion = true;
				}
			}
		}
	}

	return hasVersion;
}

// ----------------------------------------------------------------------
// Flash Writing (overcomes IE click-to-activate issues)
// ----------------------------------------------------------------------

function flashGetAttributes(args, srcParamName, classid, mimeType) {
	var ret = {
		'objectAttrs': {'classid': classid },
		'paramAttrs': {},
		'embedAttrs': {}
	};

	for (var k in args) {
		var v = args[k];

		switch (k) {
			case "classid":
				break;
			case "pluginspage":
				ret.embedAttrs[k] = v;
				break;
			case "src":
			case "movie":
				ret.embedAttrs["src"] = v;
				ret.paramAttrs[srcParamName] = v;
				break;
			case "onafterupdate":
			case "onbeforeupdate":
			case "onblur":
			case "oncellchange":
			case "onclick":
			case "ondblClick":
			case "ondrag":
			case "ondragend":
			case "ondragenter":
			case "ondragleave":
			case "ondragover":
			case "ondrop":
			case "onfinish":
			case "onfocus":
			case "onhelp":
			case "onmousedown":
			case "onmouseup":
			case "onmouseover":
			case "onmousemove":
			case "onmouseout":
			case "onkeypress":
			case "onkeydown":
			case "onkeyup":
			case "onload":
			case "onlosecapture":
			case "onpropertychange":
			case "onreadystatechange":
			case "onrowsdelete":
			case "onrowenter":
			case "onrowexit":
			case "onrowsinserted":
			case "onstart":
			case "onscroll":
			case "onbeforeeditfocus":
			case "onactivate":
			case "onbeforedeactivate":
			case "ondeactivate":
			case "type":
			case "codebase":
			case "id":
				ret.objectAttrs[k] = v;
				break;
			case "width":
			case "height":
			case "align":
			case "vspace":
			case "hspace":
			case "class":
			case "title":
			case "accesskey":
			case "name":
			case "tabindex":
				ret.embedAttrs[k] = v;
				ret.objectAttrs[k] = v;
				break;
			default:
				ret.embedAttrs[k] = v;
				ret.paramAttrs[k] = v;
		}
	}
	if (mimeType) ret.embedAttrs['type'] = mimeType;

	return ret;
}

function flashGetTags(objectAttrs, paramAttrs, embedAttrs) {
	var objectStr = '';
	var paramStr = '';
	var embedStr = '';

	if (isWinIE) {
		for (var i in objectAttrs) objectStr += i + '="' + objectAttrs[i] + '" ';
		for (var i in paramAttrs)  paramStr  += '<param name="' + i + '" value="' + paramAttrs[i] + '" />';
		var str = '<object ' + objectStr + '>' + paramStr + '</object>';
	} else {
		for (var i in embedAttrs) embedStr += i + '="' + embedAttrs[i] + '" ';
		var str = '<embed ' + embedStr + '></embed>';
	}

	return str;
}

function flashReplace(el, args, majorVer,minorVer,revision) {
	var version = (args.version) ? args.version.split('.') : [];
	delete(args.version);

	var majorVer = majorVer || version[0] || -1;
	var minorVer = minorVer || version[1] || 0;
	var revision = revision || version[2] || 0;

	var defaults = {
		'bgcolor': 		'#ffffff',
		'align': 		'middle',
		'quality': 		'high',
		'wmode':		'transparent',
		'allowScriptAccess':'sameDomain',
		'type': 		'application/x-shockwave-flash',
		'codebase': 	'https://fpdownload.macromedia.com/get/flashplayer/current/swflash.cab',
		'pluginspage': 	'https://www.adobe.com/go/getflashplayer'
	}

	for (var i in args) defaults[i] = args[i];

	var el = (typeof el == 'string') ? document.getElementById(el) : el;
	if (el) {

		// ID needs to be unique to the page for communication between AS & JS in IE
		// Also mustn't include special chars (see notes on ExternalInterface in flash)
		defaults.id   = args.id || args.name || el.id.replace(/[^a-z0-9]+/gi,'') + 'FlashMovie';
		defaults.name = args.name || args.id || defaults.id;

		var ret = flashGetAttributes(defaults, "movie", "clsid:d27cdb6e-ae6d-11cf-96b8-444553540000", "application/x-shockwave-flash");
		var str = flashGetTags(ret.objectAttrs, ret.paramAttrs, ret.embedAttrs);

		if (majorVer==-1 || flashDetect(majorVer, minorVer, revision)) {
			el.innerHTML = str;
		}
	}
}

function FlashPlayer(el) {
	this.container = el;
	this.paramLink = this.container.down('a.jsFlashParams');
	this.params = {};

	if (!this.paramLink && !this.paramLink.href) return;

	this.params.src = this.paramLink.href;

	if (this.paramLink.rel) {
		var pairs = this.paramLink.rel.split('|');
		for (var i=0; i<pairs.length; i++) {
			var keyVal = pairs[i].split(':');
			this.params[keyVal[0]] = unescape(keyVal[1]);
		}
	}

	flashReplace(this.container, this.params);
}

document.observe('dom:loaded',function(){
	$$('.jsFlashReplace').each(function(el){
		new FlashPlayer(el);
	});
});