BleepingComputer.com: doubt about page branching

every browser has somewhat its own way of rendering codes..... like Netscape like IE.... but what about Mozilla and chrome how they are different in rendering the codes.....

and suppose i want to do page branching (according to browsers) so we use

navigator.appName=="Netscape" for netscape
navigator.appName=="Internet Explorer" for IE
so in similar fashion can we use
navigator.appName=="Chrome" for chrome
navigator.appName=="Firefox" for mozilla firefox

and do chrome and mozilla use any spl html tag

like layer is in netscape...

thanks

What is it that you are asking exactly? Are you asking how to do browser specific javascript, or how to detect different browsers, or about Mozilla and Chrome specifically?

actually i am asking how to detect different browsers .. iknow about IE and netscape... but can i detect browser like chrome and firefox using the above mentioned code...

and my second doubt was ... can chrome and firefox support any special tags like netscape support <layer>...