// Make sure namespaces are defined
if (typeof TGN == "undefined")
{
	var TGN = {};
}

if (typeof TGN.Utils == "undefined")
{
	TGN.Utils = {};
}

TGN.Utils.Flash =
{
	// Version of Flash required
	majorVersion: 9,
	minorVersion: 0,
	revisionVersion: 45,

	// Detect the broswer version
	isIE: (navigator.appVersion.indexOf("MSIE") != -1) ? true : false,
	isWin: (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false,
	isOpera: (navigator.userAgent.indexOf("Opera") != -1) ? true : false,

	/// <summary>
	/// Get the version of the current Flash player
	/// </summary>
	getFlashVersion: function()
	{
		return this.pvtGetControlVersion();
	},

	/// <summary>
	/// Get the version of the current Flash player
	/// </summary>
	/// <param name="swfName">Name of the swf file</param>
	/// <param name="width">Width of the player's viewport.</param>
	/// <param name="height">Height of the player's viewport.</param>
	/// <param name="flashVars">String to be passed to the player in the FlashVars parameter.</param>
	/// <param name="noFlashDiv">DOM Id of the a div to show if no player is installed.</param>
	createFlashElement: function(swfName, width, height, flashVars, noFlashDiv)
	{
		var ret = null;

		// Version check for the Flash Player that has the ability to start Player Product Install (6.0r65)
		var hasProductInstall = this.pvtDetectFlashVersion(6, 0, 65);

		// Version check based upon the values defined in globals
		var hasRequestedVersion = this.pvtDetectFlashVersion(this.majorVersion, this.minorVersion, this.revisionVersion);

		if (hasProductInstall && hasRequestedVersion)
		{
			// Users has Flash player
			ret = this.pvtGenerateElement(
				"src", swfName,
				"FlashVars", flashVars,
				"width", width,
				"height", height,
				"align", "middle",
				"id", swfName,
				"quality", "high",
				"bgcolor", "#ffffff",
				"name", swfName,
				"allowScriptAccess", "always",
				"type", "application/x-shockwave-flash",
				"pluginspage", "http://www.adobe.com/go/getflashplayer"
			);
		}
		if (hasProductInstall && !hasRequestedVersion)
		{
			// Users has Flash player but the wrong version

			var playerType = (this.isIE == true) ? "ActiveX" : "PlugIn";
			var redirectURL = window.location;
			var documentTitle = document.title.slice(0, 47) + " - Flash Player Installation";

			ret = this.pvtGenerateElement(
				"src", "playerProductInstall",
				"FlashVars", "MMredirectURL=" + redirectURL + "&MMplayerType=" + playerType + "&MMdoctitle=" + documentTitle + "",
				"width", "100%",
				"height", "100%",
				"align", "middle",
				"id", "FlashPlayerInstall",
				"quality", "high",
				"bgcolor", "#ffffff",
				"name", "FlashPlayerInstall",
				"allowScriptAccess", "always",
				"type", "application/x-shockwave-flash",
				"pluginspage", "http://www.adobe.com/go/getflashplayer"
			);
		}
		else
		{
			if (noFlashDiv != null)
			{
				var div = document.getElementById(noFlashDiv);
				div.style.display = "";
			}
		}

		return ret;
	},

	/// <summary>
	/// Get the version of the current Flash player
	/// </summary>
	/// <param name="swfName">Name of the swf file</param>
	/// <param name="width">Width of the player's viewport.</param>
	/// <param name="height">Height of the player's viewport.</param>
	/// <param name="flashVars">String to be passed to the player in the FlashVars parameter.</param>
	/// <param name="noFlashDiv">DOM Id of the a div to show if no player is installed.</param>
	runFlash: function(swfName, width, height, flashVars, noFlashDiv)
	{
		var objTag = this.createFlashElement( swfName, width, height, noFlashDiv );
		if( objTag != null )
		{
			document.write(objTag);
		}
	},

	/// <summary>
	/// Get the version of the current Flash player
	/// </summary>
	pvtGetControlVersion: function()
	{
		var version;
		var axo;
		var e;

		try
		{
			// version will be set for 7.X or greater players
			axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
			version = axo.GetVariable("$version");
		}
		catch (e)
		{
		}

		if (!version)
		{
			try
			{
				// version will be set for 6.X players only
				axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");

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

				// default to the first public version
				version = "WIN 6,0,21,0";

				// throws if AllowScripAccess does not exist (introduced in 6.0r47)		
				axo.AllowScriptAccess = "always";

				// safe to call for 6.0r47 or greater
				version = axo.GetVariable("$version");

			} 
			catch (e)
			{
			}
		}

		if (!version)
		{
			try
			{
				// version will be set for 4.X or 5.X player
				axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
				version = axo.GetVariable("$version");
			}
			catch (e)
			{
			}
		}

		if (!version)
		{
			try
			{
				// version will be set for 3.X player
				axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
				version = "WIN 3,0,18,0";
			}
			catch (e)
			{
			}
		}

		if (!version)
		{
			try
			{
				// version will be set for 2.X player
				axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
				version = "WIN 2,0,0,11";
			} 
			catch (e)
			{
				version = -1;
			}
		}

		return version;
	},

	/// <summary>
	/// Get the version of the current Flash player (for older shockwave versions)
	/// </summary>
	pvtGetSwfVersion: function()
	{
		// NS/Opera version >= 3 check for Flash plugin in plugin array
		var flashVer = -1;

		if (navigator.plugins != null && navigator.plugins.length > 0)
		{
			if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"])
			{
				var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
				var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
				var descArray = flashDescription.split(" ");
				var tempArrayMajor = descArray[2].split(".");
				var versionMajor = tempArrayMajor[0];
				var versionMinor = tempArrayMajor[1];
				var versionRevision = descArray[3];

				if (versionRevision == "")
				{
					versionRevision = descArray[4];
				}

				if (versionRevision[0] == "d")
				{
					versionRevision = versionRevision.substring(1);
				}
				else if (versionRevision[0] == "r")
				{
					versionRevision = versionRevision.substring(1);
					if (versionRevision.indexOf("d") > 0)
					{
						versionRevision = versionRevision.substring(0, versionRevision.indexOf("d"));
					}
				}

				flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
			}
		}
		else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1)
		{
			// MSN/WebTV 2.6 supports Flash 4
			flashVer = 4;
		}
		else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1)
		{
			// WebTV 2.5 supports Flash 3
			flashVer = 3;
		}
		else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1)
		{
			// older WebTV supports Flash 2
			flashVer = 2;
		}
		else if (this.isIE && this.isWin && !this.isOpera)
		{
			flashVer = this.pvtGetControlVersion();
		}

		return flashVer;
	},

	/// <summary>
	/// Returns true if that version or greater is available
	/// </summary>
	/// <param name="reqMajorVer">Required major version.</param>
	/// <param name="reqMinorVer">Required minor version.</param>
	/// <param name="reqRevision">Required revision.</param>
	pvtDetectFlashVersion: function(reqMajorVer, reqMinorVer, reqRevision)
	{
		versionStr = this.pvtGetSwfVersion();
		if (versionStr == -1)
		{
			return false;
		}
		else if (versionStr != 0)
		{
			if (this.isIE && this.isWin && !this.isOpera)
			{
				// 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];

			// is the major.revision >= requested major.revision AND the minor version >= requested minor
			if (versionMajor > parseFloat(reqMajorVer))
			{
				return true;
			}
			else if (versionMajor == parseFloat(reqMajorVer))
			{
				if (versionMinor > parseFloat(reqMinorVer))
				{
					return true;
				}
				else if (versionMinor == parseFloat(reqMinorVer))
				{
					if (versionRevision >= parseFloat(reqRevision))
					{
						return true;
					}
				}
			}

			return false;
		}
	},

	/// <summary>
	/// Builds the DOM tag with the given parameters.
	/// </summary>
	pvtGenerateElement: function()
	{
		var ret = this.pvtGetArgs(arguments, ".swf", "movie", "clsid:d27cdb6e-ae6d-11cf-96b8-444553540000", "application/x-shockwave-flash");
		return this.pvtGenerateObject(ret.objAttrs, ret.params, ret.embedAttrs);
	},

	/// <summary>
	/// Builds the object or embed tag.
	/// </summary>
	pvtGenerateObject: function(objAttrs, params, embedAttrs)
	{
		var i = 0;
		var str = '';

		if (this.isIE && this.isWin && !this.isOpera)
		{
			str += '<object ';

			for (i in objAttrs)
			{
				str += i + '="' + objAttrs[i] + '" ';
			}

			str += '>';

			for (i in params)
			{
				str += '<param name="' + i + '" value="' + params[i] + '" /> ';
			}

			str += '</object>';
		}
		else
		{
			str += '<embed ';

			for (i in embedAttrs)
			{
				str += i + '="' + embedAttrs[i] + '" ';
			}

			str += '> </embed>';
		}

		return str;
	},

	/// <summary>
	/// Builds the argument list for the player.
	/// </summary>
	pvtGetArgs: function(args, ext, srcParamName, classid, mimeType)
	{
		var ret = new Object();

		ret.embedAttrs = new Object();
		ret.params = new Object();
		ret.objAttrs = new Object();

		for (var i = 0; i < args.length; i = i + 2)
		{
			var currArg = args[i].toLowerCase();

			switch (currArg)
			{
				case "classid":
					break;

				case "pluginspage":
					ret.embedAttrs[args[i]] = args[i + 1];
					break;

				case "src":
				case "movie":
					args[i + 1] = this.pvtAddExtension(args[i + 1], ext);
					ret.embedAttrs["src"] = args[i + 1];
					ret.params[srcParamName] = args[i + 1];
					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":
					ret.objAttrs[args[i]] = args[i + 1];
					break;

				case "id":
				case "width":
				case "height":
				case "align":
				case "vspace":
				case "hspace":
				case "class":
				case "title":
				case "accesskey":
				case "name":
				case "tabindex":
					ret.embedAttrs[args[i]] = ret.objAttrs[args[i]] = args[i + 1];
					break;

				default:
					ret.embedAttrs[args[i]] = ret.params[args[i]] = args[i + 1];
			}
		}

		ret.objAttrs["classid"] = classid;

		if (mimeType)
		{
			ret.embedAttrs["type"] = mimeType;
		}

		return ret;
	},

	/// <summary>
	/// Adds and extension parameter.
	/// </summary>
	pvtAddExtension: function(src, ext)
	{
		if (src.indexOf('?') != -1)
		{
			return src.replace(/\?/, ext + '?');
		}
		else
		{
			return src + ext;
		}
	}
};