var isIE = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
// system globals
var flash2Installed = false;
var flash3Installed = false;
var flash4Installed = false;
var flash5Installed = false;
var flash6Installed = false;
var flash7Installed = false;

if (isIE) {
	// PC-IE needs this code to run properly
	document.write('<'+'SCRIPT LANGUAGE=VBScript\> \n');
	document.write('on error resume next \n');
	document.write('flash2Installed = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.2"))) \n');
	document.write('flash3Installed = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.3"))) \n');
	document.write('flash4Installed = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.4"))) \n');
	document.write('flash5Installed = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.5"))) \n');	
	document.write('</SCR' + 'IPT\> \n');
}

function isFlash(){	
	
	var requiredVersion = 5;
	var useRedirect = true;
	var maxVersion = 5;	
	var actualVersion = 0;
	var hasRightVersion = false;
	var isMac = (navigator.appVersion.indexOf("Mac") != -1) ? true : false;
	
	//if user is browsing with old Netscape browser redirect them
	//to nonflash page
	//there is an issue with NS4 not recognizing a browser resize 
	//because of the flash movie which causes the stylesheet to
	//blow out
	//ns6 also has issues with playing flash inside divs
	/*
	var isNS = ( (navigator.appName.indexOf("Netscape") != -1) &&  (parseInt(navigator.appVersion) == 5))?true:false;
	var isNS4 = ( (navigator.appName.indexOf("Netscape") != -1) &&  (parseInt(navigator.appVersion) == 4))?true:false;
	if (isNS6 || isNS4) {
		return(false);
	}
	*/
	
	if (navigator.plugins) { 			
		if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
			var isVersion2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
			var flashDescription = navigator.plugins["Shockwave Flash" + isVersion2].description;
			var flashVersion = parseInt(flashDescription.charAt(flashDescription.indexOf(".") - 1));

			if (flashVersion == 2) flash2Installed = true;
			if (flashVersion == 3) flash3Installed = true;
			if (flashVersion == 4) flash4Installed = true;
			if (flashVersion == 5) flash5Installed = true;
		}
	}
	
	for (var i = 2; i <= maxVersion; i++) {
		if (eval("flash" + i + "Installed") == true) actualVersion = i;
	}
	
	// uncomment next line to display flash version during testing
	//alert("version detected: " + actualVersion + " version required:" + requiredVersion);
	if (actualVersion < requiredVersion) {
		return(false);
	}
	else{return(true)}
}