<script> and prevention of client side rivals to javas

[onlineconnect]

My question really regards <script> in XHTML script needed to be defined as in <script type="text/javascript">, the script tag is used to define a client side script "such as javascript". In html5 <script> seems to just mean "Javascript" now considering the amount of server side languages available does that not restrict future development of client side scripting languages? Especially as unlike <img src> script is embedded and cannot be defined by MIME.

[onlineconnect]

Its OK I found answer, script if no type is defined the browser assumes javascript.