no script tag in firefox

IS <noscript>开发者_开发知识库 tag supported in Firefox 3.5+ ? I used this for an alert message and used IE while coding this , but after setting all proper css i dont get anything on forefox when js is disabled EG: <noscript>JS disabled</noscript> is fine on IE but not on FF.

IN ie i had included in section FF didnt recognize this , so i put it in body now its fine .