annoying <p> and <br> tags

I cannot correctly publish a javascript since WordPress editor adds useless html <p> and
.
Here is my example:

After checking, the code was not correctly put. In your page the code is:

<script language=”JavaScript” type=”text/JavaScript”>
novelgames_gameID = ‘143’;
novelgames_siteID = ‘4488’;
novelgames_language = ‘e’;</p>
<p></script>
<script language=”JavaScript” type=”text/JavaScript” src=”https://www.novelgames.com/flashgames/game.js”></script&gt;

which is not correct, please remove the </p> <p> and

How could I insert that code without <p> and
???
Thanks.