//javascript helper to determine flash player version

// Detect Client Browser type
var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;
// JavaScript helper required to detect Flash Player PlugIn version information
function JSGetSwfVer(i){
	// 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];
			if ( descArray[3] != "" ) {
				tempArrayMinor = descArray[3].split("r");
			} else {
				tempArrayMinor = descArray[4].split("r");
			}
      		var versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
            var flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
            //alert(flashVer);
      	}
	}
	// MSN/WebTV 2.6 supports Flash 4
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) flashVer = 4;
	// WebTV 2.5 supports Flash 3
	else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) flashVer = 3;
	// older WebTV supports Flash 2
	else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) flashVer = 2;
	return flashVer;
}
// OLD: When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
// NEW: simply returns major version (args not needed but left in for use later if needed
function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision)
{
 	reqVer = parseFloat(reqMajorVer + "." + reqRevision);
   	// loop backwards through the versions until we find the newest version
	for (i=25;i>0;i--) 
	{
		if (isIE && isWin && !isOpera) 
		{
			versionStr = VBGetSwfVer(i);
		} 
		else 
		{
			versionStr = JSGetSwfVer(i);
		}
		if (versionStr == -1 ) 
		{
			return false;
		} 
		else if (versionStr != 0) 
		{
			if(isIE && isWin && !isOpera) //eg WIN 8,0,22,0
			{
				tempArray         = versionStr.split(" ");  //strip of browser name at front
				tempString        = tempArray[1];
				versionArray      = tempString .split(","); //separate into numeric parts
			} 
			else 
			{
				versionArray      = versionStr.split(".");
			}
			var versionMajor      = versionArray[0];
			return versionMajor;    //jump out of loop & function and return majorVersion
		}	
			// OLD code used for boolean version of function
//			var versionMinor      = versionArray[1];
//			var versionRevision   = versionArray[2];
//			var versionString     = versionMajor + "." + versionRevision;   // 7.0r24 == 7.24
//			var versionNum        = parseFloat(versionString);
//			alert(versionArray[0] + ' ' + versionArray[1] + ' ' + versionArray[3]);
//			alert(versionNum);
//        	// is the major.revision >= requested major.revision AND the minor version >= requested minor
//			if (versionMajor > reqMajorVer) 
//			{
//				return true;
//			} 
//			else if (versionMajor == reqMajorVer) 
//			{
//				if (versionMinor > reqMinorVer)
//					return true;
//				else if (versionMinor == reqMinorVer) 
//				{
//					if (versionRevision >= reqRevision)
//						return true;
//				}
//			}
//			return false;
//		}

	}//end for loop
} //end function