Recognising javascript

Hi

Is there a way to enter a line of javascript code in the section editor that gets recognised on the published page itself? I need to assign a specific line of javascript code (to create an image based menu) which is specific to each tour page. However, when I view the published page, it produces an error of "object doesn't support this object or method". I've tried using a text field, text box and wysiwyg as the field in which to enter the javascript code [ie, <script type="text/javascript" src="scandi.js"></script> ] but it's not recognising that line of javascript in the source code and leaving it blank (which is causing the browser error). Any ideas?

thanks in advance.