var flashVersion = getFlashVersion();
var flashVersion_DONTKNOW = -1;

if (flashVersion >= requiredFlashVersion) location.replace(hasFlashURL);
else if (flashVersion > 0) location.replace(upgradeFlashURL);
else if (flashVersion == 0) location.replace(noFlashURL);
else if (flashVersion == flashVersion_DONTKNOW || flashVersion == null) location.replace(dontKnowFlashVersionURL);