I tried to delete unnecessary files in my drive c so that I can have more space in my hardisk because it's getting slow.I didn't quiet notice that in the deletion that I did,I might have affected the javascript and the adobe flash player.coz every time I visited site that offer videos,the site would either say " that i might have turned off my javascript "or "i have to install my adobe flash player".I really don't know what to do.I have already successfully downloaded adobe flash player myself few times but it still don't work .

Download and install, theses are latest versions and will update or install what is there and if not there, it will install

Shockwave and Flash Player 11.0.3.472
Download the Shockwave and Flash Player 11.0.3.472 (Complete Standalone Installer) (http://www.softwarepatch.com/internet/shockwave.html)

Same here
Java Virtual Machine 6 update 12
Java Virtual Machine 6 update 12 (Standalone package) (http://www.softwarepatch.com/windows/sunjava.html)

Download and install, theses are latest versions and will update or install what is there and if not there, it will install

Shockwave and Flash Player 11.0.3.472
Download the Shockwave and Flash Player 11.0.3.472 (Complete Standalone Installer) (http://www.softwarepatch.com/internet/shockwave.html)

same here
Java Virtual Machine 6 update 12
Java Virtual Machine 6 update 12 (Standalone package) (http://www.softwarepatch.com/windows/sunjava.html)

I have already tried both as you suggest.both are successfully installed but it still don't work.thanks for your help.I hope you can give another solution.

There's a very good chance that during your haste you may have severed connection between certain files.

Try repairing:

Insert the Windows XP CD into your CD drive and restart your computer. If you are prompted, select any options required to start (boot) from the CD.

Select the repair or recover option by pressing R.

Try this before a repair

Assuming you are using IE,

Restore the Default Settings for Internet Explorer


1.
Click Start and then click Internet Explorer .
2.
In Internet Explorer, click Tools .
3.
Click Internet Options .
4.
Click the Advanced tab.
5.
Click the Reset button. A new window opens.
6.
Click Reset .
7.
Click Close .
8.
Click OK .