Any browser that doesn't support JavaScript or has it disabled renders the content of <noscript/>.
<html> <head> <title>Title of Page</title> <script language="JavaScript"> function sayHi() { alert("Hi"); } </script> </head> <body> <script language="JavaScript"> sayHi(); </script> <noscript> <P>Your browser doesn't support JavaScript. If it did support JavaScript, you would see this message: Hi!</p> </noscript> <P>After noscript.</p> </body> </html>