Go to this tester page using every browser you have installed (one at a time obviously!);
http://kb.adobe.com/selfservice/view...5507&sliceId=2 The current version is 10,0,12,36 and, if you don't have it, you should upgrade immediately because it fixes one or more security issues.
I can post links for the special Adobe uninstaller and the new versions if you need them. As for JavaScript, I'm not sure what it has to do with flash player, but you can doublecheck that it is working in your browser(s) by going here and clicking on 'JavaScript' in one of the orange boxes on the left of the page;
http://www.javatester.org/ If it is working, a box will open confirming it.