jquery questions

I'm new learning about Jquery and see alot navigation dropdown menu tutorial use this code type.

My question is it better to use css and query code in navigation instead of just css by it self. Also what happen if someone don't got jquery installed on there computer will they still be able to view my drop down navigation on my web site.

Or is using normal javascript better than using query script code.

jquery is just a javascript library, it wont work if you dont have javascript enabled in your browser just like any js. css is fine to use but not all browsers are compliant, so its a toss up and a crapshoot.

So what web code is better to use for all browser and right now use css but IE does work right with.

You always want to persue the ideals of "graceful degradation", so you are free to use fancy Javascript and jQuery, but in the event a user doesn't have JS turned on, the website still works ok.

http://webtips.dan.info/graceful.html

Ok I get what your saying so baisc got make site work for modren borowser plus low end ones too thank for all your help .